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The olive tree boasts two prizes—the olive itself (called the table olive) and the precious oil pressed from the fruit's flesh. In fact, a third prize is the tree which has a twisted trunk full of character, grey-green leaves, and wood which can be used for carving and furniture-making. Fallen fruit looks edible, but it isn't. All olives, whether green or black, require processing before they can be eaten.


The olive tree has been given the Latin name Olea europaea and is from the botanical family called Oleaceae. It is an evergreen that typically grows from 10-40 ft (3-12 m) tall. The branches are fine and many, and the leathery leaves are spear-shaped and dark green on their tops and silver on their undersides.

The trees bloom in the late spring and produce clusters of small, white flowers. Olives grow erratically (unless the trees are cultivated and irrigated) and tend to either produce in alternate years or bear heavy crops and light ones alternately. Seedlings do not produce the best trees. Instead, seedlings are grafted to existing tree trunks or trees are grown from cuttings. Olives are first seen on trees within eight years, but the trees must grow for 15-20 years before they produce worthwhile crops, which they will do until they are about 80 years old. Once established, the trees are enduring and will live for several hundred years.

Olives mature on the tree and can be harvested for green table olives when the fruit is immature or left on the tree to ripen. The ripe olives are also harvested for processing as food but are left on the trees still longer if they are to be used for oil. Six to eight months after the flowers bloomed, the fruit will reach its greatest weight; and 20-30% of that weight (excluding the pit) is oil. Inside each olive, the pit contains one or two seeds; botanists call this kind of fruit with a seed-bearing stone a drupe; plums and peaches are other drupes.

Olives grow in subtropical climates in both the northern and southern hemispheres. Hundreds of varieties are grown; some produce only table olives, and others are cultivated for olive oil. Italy and Spain lead world production of olives; and Greece, Morocco, Tunisia, Portugal, Syria, and Turkey also consider the olive an important part of their economies. Europe produces three-fourths of the world's olives and also leads in consumption of both table olives and olive oil. California has also become a respected producer, especially since the health benefits of the olive have been widely recognized.


Cultivation of the olive is as old as the civilizations that encircle the Mediterranean Sea. The indications that people had learned the secrets to making olives edible date from the isle of Crete in about 3,500 b.c. The Egyptians recorded their knowledge of the olive around 1,000 b.c., and the Phoenicians exported it to Greece, Libya, and Carthage. The Greeks further carried the olive to Sicily, Southern Italy, and Spain. The Romans also mastered olive cultivation. Around 600 b.c., they had a merchant marine and stock market just for the oil trade. Sardinia and the south of France became olive-growing regions, thanks to the Romans.

Olive branches, leaves, and wood gained sacred connotations in both Testaments of the Bible, like the dove's return to Noah's Ark with an olive leaf in its beak. In the Olympic Games in Greece, the victors were awarded crowns of olive branches and leaves. Oil figured in the anointing of athletes, rulers, and religious authorities and was used as lamp oil by most ancient civilizations on the Mediterranean rim. It was olive oil that burned on empty for eight days in the Hebrews' eternal flame during the miracle celebrated as Hanukkah. The olive's fragrant wood was reserved exclusively for altars to the gods, and all of these uses helped make the olive a symbol of peace.

In the 1500s, Spanish missionaries brought the both the grape and the olive to California. In South America, Italian immigrants planted the olive, and they were also responsible for plantings in Australia and southern Africa. The olive achieved new fame in California when, in 1870, an inventive bartender added the fruit to a new concoction named the Martinez for the town he lived in; the olive-ornamented cocktail is known today as the martini.

Raw Materials

The olives themselves are the most important raw material. Depending on the curing method, pure water, caustic soda or lye, and coarse salt are used. Flavorings can be added to the brine. Among the favorites are red pepper or a variety of Mediterranean herbs for black olives and lemon or hot green peppers or chilies for green olives. Fennel, wine vinegar, or garlic can be used to add interest to any olive, but the time required for the olives to take on these flavors can range from a week for whole chilies to several months for a more subtle taste like the herb fennel.

Pitted green olives can be stuffed to add color, flavor, and texture. Almonds, pearl onions, sliced pimentos, mushrooms, anchovies, and pimento paste are the most common olive accessories.


"Design" of olives includes variety, color with green or ripe olives as the two basic differences, and method of curing. Kalamata olives from Greece are one of the best-known varieties and are distinguished by their purplish brown color and elongated shape with a sharp point. The green Manzanilla is the most famous Spanish olive and is now also cultivated in California. The Nicoise olive from France is famous for the tuna salad that requires the olive as an ingredient. Naturally cured olives can vary in color from a wonderful range of greens to purple, black, brown, and even the small Souri olive from Israel that is brownish pink.

The key to the flavor, color, and texture of the olive is the moment of harvest. Obviously, the fruit can be harvested when it is green and unripe, fully ripened to black or any stage in between. Older fruit can be salt-cured or dry cured to produce a salty, wrinkled product. Damaged fruit can still be used by pressing it into oil. It is the combination of the harvest, the cure, and any added flavors that yield the characteristics sought by the producer and consumer.

Until recently, most olives available in American grocery stores were artificially cured, meaning that they were treated with lye to remove their bitterness. This is still true for all canned black olives, many of the green olives imported from Spain and the black Nicoise from France, and other bottled versions; however, renewed appreciation of the olive has led to interest in naturally cured olives that are now generally available at deli counters and are bottled by some specialized manufacturers. Naturally cured olives are cured with either oil or brine and additives like wine vinegar for flavor.

Lye treatment is done to remove the bitterness of the olive. Olives contain oleuropein (after their botanical name Olea europea), and it is this substance (a compound called a glucoside) that makes them too bitter to eat directly from the tree. According to the purists, lye-cured olives are bland, either spongy or hard (but not crunchy), with most of the flavor gone. Lye-cured olives are also almost always pitted, and the most naturally flavorful part of the olive is adjacent to the pit. Curing with lye softens the olive so it can be picked when it is still hard, but olives to be naturally cured must be more ripe, handled carefully, and processed quickly.

The Manufacturing

In the field

  • 1 When olives are harvested by hand, sheets of netting or plastic are placed on the ground under the trees, and the harvesters climb ladders and comb the fruit from the branches. Long-handled rakes made of wood or plastic are used to pull the olives from the tree. There are other methods of harvesting including striking the branches with long canes or using shaped animal horns as combs to scrape the fruit from the branches. Pickers who use their fingers only employ a milking motion to strip the fruit from the trees. Hand picking is preferred by most growers, but it is also expensive.

    Machine harvesting is a recent addition to the olive grower's arsenal. The machines were borrowed from the nut harvesters and are able to grasp the trunks of the trees and shake them. Each machine has a crew of six to nine men to operate the machine, shepherd the falling olives into the nets, and strike the branches to knock down the stub-born few by hand. The vibrations of the machine shake down about 80% of the tree's burden, and knocking at the branches with staves yields another 10% percent. About 1,100-1,800 lb (500-815 kg) of olives per day can be harvested in this manner. The trees are sensitive to such assaults by machines, however, and many purists prefer hand harvesting.

  • 2 After harvesting of a tree's crop is completed, the nets filled with olives are emptied into baskets or crates, which are then transported to the processing plant.

In the processing plant

  • 3 At the processing plant, the harvest bags are emptied into 1,000 lb (450 kg) bins. From the bins, the olives are deposited onto conveyors and moved past a blower that blasts leaves and tree and dirt particles off the fruit. They are washed in pure water and placed in 55 gal (2001) barrels.
  • 4 For brine curing of green olives, 12-14% salt and water are added to the barrels filled with olives. One cup of live active brine is added to each barrel; the live active solution is previously used brine that contains airborne yeasts and sugars from the olives that fermented in the brine. The active ingredient transfers enough yeast to begin the curing process in the new batch of brine. If salt and water alone were added to the olives, fermentation (curing) would not begin on its own, so the live active brine is a starter. A salometer—a salinity meter or specific gravity meter—is used to measure the percent of salt in solution in the barrels. For green olives, the salinity is increased by 2% every two to three weeks from the initial salinity of 12-14%. Black olives begin their curing at 8-9% salinity; this is increased by 1-2% every 2 weeks until a maximum solution of 22-24% is reached.
  • 5 After curing is completed, the barrels of olives are emptied onto a shaker table and rinsed with clean water. The shaker table sorts the olives by size while inspectors watch and remove damaged fruit. The olives are moved to another station where they are pitted then stuffed. At filling stations, they are put in jars that are filled with an 8-11% saline solution. If the saline is flavored, herbs or other flavorings are also added to the brine. The jars are then capped and sealed for safety.

Other curing and canning methods

  • 6 Processing plants may use other methods of curing. Lye curing is accomplished with a solution containing lye, an alkaline byproduct of wood ash. The olives soak in lye solutions for 24 hours (as opposed to the six to eight weeks required for salt brine curing). The lye draws out the oleuropein to remove the olive's natural bitterness and make it edible; unfortunately, lye curing also changes the color and texture of the olive and removes many of its nutrients.
  • 7 Dry (or Greek-style) curing is a method in which plump black olives are layered in barrels with dry rock salt (no liquid is added). The salt breaks down the bitterness and leaches it out. The olives are stirred daily, and purplish liquid leached from them is drained from the bottoms of the barrels. After four to six weeks, the olives are rinsed to remove the salt and glycoside and lightly coated in oil; they are wrinkled and purple in color, and these qualities are unpleasant to some despite the excellent flavor and nutritional value of dry-cured olives.
  • 8 Black olives can also be cured by air curing. The olives are stored in burlap bags that allow air to pass through and around the olives. Over a period of weeks, the olives will cure, although they tend to be stronger in flavor than olives cured by other methods.
  • 9 Green or black olives can be cured in water alone. They should be rinsed once or twice daily and consumed in about two weeks when the curing is complete. Water-and air-cured olives are not stable and should be kept in jars in the refrigerator; brine-, lye-, and salt-cured (dry-cured) olives will keep in crocks almost indefinitely.
  • 10 In 1910, discovery of a method of canning black olives made commercial processing possible. Until that time, processing had been unsuccessful because the olives tended to discolor. The canning method consists of air ripening or lye-curing green olives in an oxygenated solution until they turn black, and treating them with ferrous gluconate. The iron additive fixes the black color, but the whole process removes most of the nutritional value of the olive. The olives are then packed in mild brine and processed in canners using pressure and heat.

Quality Control

The quality of olive processing is protected by many sets of hands and eyes. Steps from hand-picking in the grove to hand-culling of olives on the shaker table are monitored by touch. All other processes are watched carefully. Chemistry is regulated by relatively simple instruments, and taste tests help assure the crunch of cured olives and the blending of flavors.


Olive producers usually manufacture olive oil as well. Another byproduct that is growing in popularity is processed olive leaves. They are made into tea, put in caplets as crushed leaves, and processed as an extract or in tablets; all forms are believed to aid blood flow and inhibit viruses and diabetes.

Waste from olive processing consists of the pits and damaged fruit. The pits are sold as food for pigs, and all other olive waste can be ground and used as organic fertilizer. Some manufacturers return it to their groves to fertilize the olive trees.

The Future

A ripe future is predicted for the olive business thanks to three occurrences. Medical studies have shown that olives and olive oil are healthful foods that provide vitamins, minerals, and other nutrients. They may reduce the risk of heart attacks and breast cancer, among other diseases. In America, the influence of immigrants from Spain, Italy, and the North Coast of Africa who are accustomed to naturally cured fruit has led to an interest in flavorful olives; specialty growers are reaching this market with carefully crafted, flavored olives. Finally, the "discovery" of crunchy, tasty, nutritious, naturally cured olives by a growing public is leading to the decline of canned ripe olives, which may disappear from the marketplace by about 2010.

Where to Learn More


Klein, Maggie Blyth. The Feast of the Olive. San Francisco: Chronicle Books, 1994.

Rosenblum, Mort. Olives: The Life and Lore of a Noble Fruit. New York: North Point Press, 1996.


Clark, Melissa. "An Ode to the Olive." Vegetarian Times (October 1997): 136.

Hamblin, Dora Jane. "To Italy, Olive Oil is Green Gold." Smithsonian (March 1985): 98.

Johnson, Elaine. "Know Your Olive Options." Sunset (April 1995): 164.

Kummer, Corby. "Real Olives: In Praise of an Old World Treat, Pits and All." The Atlantic (June 1993): 115.

Wing, Lucy. "A Taste of Olives." Country Living (September 1994): 142.


Australian Olive Association http://www.australianolives.com.au/.

Australian Olive Association and Information Center. http://pom44.ucdavis.edu/olive2.html/.

Naomi's Olive Page, "An Ode to the Olive" http://www.bayarea.net/-emerald/olive.html/.

The Olive Oil Source. http://www.oliveoilsource.com/.

Santa Barbara Olive Company. Http://www.sbolive.com/.


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OLIVE (Heb. זַיִת), the Olea europaea tree and its fruit. The wild olive grows in the groves of Upper Galilee and Carmel. It is a prickly shrub producing small fruits. There are many varieties of cultivated olives, some being suitable for oil, and some for food as preserved olives. Its foliage is dense and when it becomes old, the fairly tall trunk acquires a unique pattern of twists and protuberances on its bark. There are trees in Israel estimated to be 1,000 years old that still produce fruit. In old age the tree becomes hollow but the trunk continues to grow thicker, at times achieving a circumference of 20 ft. (6 m.). The olive tree blossoms at the beginning of summer and its fruit ripens about the time of the early rains in October. The fruit, which is rich in oil, is first green, but later becomes black. Olive trees have always been the most extensively distributed and the most conspicuous in the landscape of Israel. The olive is numbered among the seven species with which Ereẓ Israel is blessed (Deut. 8:8). The Rab-Shakeh, who besieged Jerusalem, also made use of a similar description for Ereẓ Israel when promising the inhabitants of Jerusalem that he would exile them to a country of like fertility (ii Kings 18:32). The bounty of Israel is frequently described by "corn, wine, and oil" (Deut. 7:13, et al.); grain, vines, and olives, which formed the basis of Israel's economy. The olive flourishes throughout the country. Its cultivation dates from early times. When the Israelites conquered the land they found extensive olive plantations (Deut. 6:11). Western Galilee, the territory of Asher, was especially rich in olives (33:24), as it is today. They flourish in mountainous areas, even among the rocks, thus producing "oil out of the flinty rock" (32:13). "The Mount of Olives" (Zech. 14:4) near Jerusalem is Har ha-Mishḥah, "the mount of Oil" of the Mishnah (Par. 3:6). The olive also develops well in the *Shephelah Lowland, where it grows near *sycamores, and David appointed a special overseer over these plantations (i Chron. 27:28).

The olive was the first to be chosen by the trees when they went "to anoint a king over themselves" in Jotham's parable (Judg. 9:8–9). The tree is full of beauty, especially when laden with fruit: "a leafy olive-tree, fair with goodly fruit" (Jer. 11:16). It is an evergreen, and the righteous who take refuge in the protection of God are compared to it (Ps. 52:10). The "olive plants" of Psalm 128:3 are the shoots that sprout from its roots and protect the trunk and, if it is cut down, they ensure its continued existence. This is the simile referred to in the words "thy children like olive saplings round about thy table." The wood is very hard and beautifully grained, making it suitable for the manufacture of small articles and ornaments, the hollow trunk of the adult tree, however, rendering it unsuitable for pieces of furniture. The olive cannot therefore be the eẓ shemen from which the doors of the Temple were made (i Kings 6:31).

In spring the olive tree is covered with thousands of small whitish flowers, most of which fall off before the fruit forms (cf. Job 15:33). After the fruit is formed the tree may be attacked by the olive fly, causing the fruit to rot and fall off (Deut. 28:40). The fruits are arranged upon the thin branches in parallel rows like ears of corn (Zech. 4:12). Two such olive branches at the side of the candelabrum symbolize the State of Israel, because "an olive leaf " symbolizes peace (cf. Gen. 8:11). After ripening, the fruit is harvested in two different ways, by beating the branches with sticks or by hand picking. The former way is quicker but many branches fall off and this diminishes successive harvests. This method was used in biblical times, the Bible commanding that the fruit on the fallen branches are to be a gift to the poor (Deut. 24:20). The second method was the more usual in mishnaic times and was termed masik ("harvesting olives"), the fingers being drawn down the branches in a milking motion so that the olives fall into the hand. By this method the "harvested" olives remained whole, whereas the "beaten" olives were bruised by the beating (Ḥal. 3:9). The best species for preserving are called kelofsin (Tosef., Ter. 4:3) or keloska olives (Av. Zar. 2:7). Though there were olives of different varieties and different sizes, the olive was designated as a standard size for many halakhot, and the expression "land of olive trees" was interpreted as "a land whose main standard of measurement is the olive" (Ber. 41b). Rabbinic literature contains innumerable details about the oil, its types and methods of extraction; the Midrash (Ex. R. 36:1) summing it up as follows: "The olive is left to fully ripen while it is yet on the tree after which it is brought down from the tree and beaten,… it is then brought up to the vat and placed in a grinding mill, where it is ground and then tied up with ropes [through which the oil is filtered], and then stones are brought [which press upon the olives] and then at last it yields its oil."

[Jehuda Feliks]

In Israel

Limited Jewish attempts to grow olives date back to the small Jewish settlements established during the First Aliyah. The planting of olive groves on a wider scope began at the Ben Shemen farm in 1905–06, and from then on grew steadily. From the establishment of the State of Israel (1948) there was a decline in the area covered by olives: in 1948–49 there were 137,000 dunams (34,000 acres); in 1959–60, 123,000 dunams; and in 1968–69, 107,000 dunams, of which 82,000 were on non-Jewish farms, especially in Arab villages in the Galilee. The amount of olive produce fluctuated substantially in those years, despite the fact that the area of land under cultivation remained fairly steady. In the most productive year, produce reached a peak of 24,500 tons (1966–67), and in the low years it reached the level of 3,800 tons (1949–50) and 2,800 tons (1954–55). In the peak year of 1966–67, 18,950 tons of olives went for food processing and another 5,550 tons yielded 3,000 tons of olive oil. In the same year the value of the olives produced and processed came to il 17,998,000. A survey carried out by the Ministry of Agriculture after the Six-Day War (1967–68) revealed 477,600 dunams of land under olive cultivation in Judea and Samaria and 3,000 dunams in the Gaza Strip. Within the borders set by the 1949 Armistice Agreements, the Galilee and the area around Lydda were the main centers of olive cultivation. After the Six-Day War, however, the mountains of Samaria and northern Judea took the lead in olive production within the cease-fire lines.

Since that time a large-scale olive oil industry has been developed in Israel, such that between 1995 and 2002 the consumption rose from 6,000 tons to 14,000 tons of olive oil per year. The increase in olive oil consumption was due to the public's recognition of its medical virtues. This trend led the Ministry of Agriculture to encourage farmers to raise olives for oil instead for eating, and to increase their yields by using advanced irrigation techniques. The majority of olive plantations held by Arab farmers are designated for olive oil, and include 180,000 dunams producing 5,000–6,000 tons of oil a year. Most of these plantations are not irrigated due to water recycling problems in the Arab sector. The main species in these plantations is the Syrian, which yields large quantities of oil and is raised in the Galilee. Jewish farmers hold another 22,000 irrigated dunams designated mainly for eating, yielding 15,000 tons of olives per year and located in central and southern Israel. They raise the Manzileno for eating and the Barnea for oil. Two institutions are responsible for regulating the olive sector in Israel: the Fruit Council is responsible for olives for eating, while the Olive Board is responsible for the development of the farming, production, and marketing of olive oil and the branding of the various oils.

[Shaked Gilboa (2nd ed.).]


F. Goldmann, Der Oelbau in Palaestina zur Zeit der Mišnâh (1907); Krauss, Tal Arch, 2 (1911), 214–26; Loew, Flora, 2 (1924), 287–95; G. Dalman, Arbeit und Sitte in Palaestina 4 (1935), 153–290; H.N. and A.L. Moldenke, Plants of the Bible (1952), 317 (index), s.v.; J. Feliks, Ẓimḥiyyat ha-Mishnah, in: Marot ha-Mishnah, Seder Zera'im (1967), 41; idem, Kilei Zera'im ve-Harkavah (1967), 155f.; idem, Olam ha-Ẓome'aḥ ha-Mikra'i (19682), 25–32. add bibliography: Feliks, Ha-Ẓome'aḥ, 55. website: www.moag.gov.il; www.oliveboard.org.il; www.fruit.org.il.

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olive, common name for the Oleaceae, a family of trees and shrubs (including climbing forms) of warm temperate climates and of the Old World tropics, especially Asia and the East Indies. Many are popular ornamentals, particularly the lilac (Syringa), true jasmine (Jasminum), privet (Ligustrum), and forsythia genera; none of these has species native to the United States. Several indigenous species of ash (Fraxinus) are valuable for timber in North America. The true olive (Olea europaea) is the source of the fruit also called olive and of olive oil; it is the most commercially important member of the family. The olive tree, a small evergreen, has been cultivated since the beginning of historical times in its native Asia Minor. Its cultivation spread very early to all the Mediterranean countries, and this is still the chief area of production. It is now grown also in Australia, S Africa, Mexico, and California, where it was introduced (c.1769) at the San Diego mission by Spanish missionaries. The mission olive of today, one of the best varieties for both pickling and oil, was developed from the trees grown at the mission. The several hundred horticultural varieties of olives, many cultivated since ancient times, differ in appearance, flavor, and oil content. Some varieties have been developed especially for oil extraction, the chief use of the fruit. Of the eating olives, green olives are picked when full-grown but unripe, and are often pitted and stuffed with pimientos or anchovies. Ripe olives, usually purplish black, are richer in oil. Both green and ripe olives are treated with lye to remove the bitter quality and then packed in brine. Olive wood, hard and close-grained, is used for cabinetwork and furniture. According to Greek mythology the olive was Athena's gift to mankind, and Athens was named in her honor for this gift. The olive branch has been the symbol of peace since before Christian times, because the oil could be used both to heal human ills and to calm troubled waters. The first vegetation seen by Noah after the Deluge was the branch of olive brought back by the dove, and a dove bearing an olive branch has also been used in art as a symbol of peace. Olives are classified in the division Magnoliophyta, class Magnoliopsida, order Scrophulariales, family Oleaceae.

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ol·ive / ˈäləv/ • n. 1. a small oval fruit with a hard pit and bitter flesh, green when unripe and brownish black when ripe, used as food and as a source of oil. 2. (also olive tree) the widely cultivated evergreen tree (Olea europaea) that yields this fruit, native to warm regions of the Old World. The olive family (Oleaceae) also includes the ash, lilac, jasmine, and privet. ∎  used in names of other trees that are related to the olive, resemble it, or bear similar fruit, e.g., Russian olive. 3. (also olive green) a grayish-green color like that of an unripe olive. • adj. grayish-green, like an unripe olive. ∎  (of the complexion) yellowish brown; sallow. ORIGIN: Middle English: via Old French from Latin oliva, from Greek elaia, from elaion ‘oil.’

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olive Mount of Olives the highest point in the range of hills to the east of Jerusalem, a holy place for both Judaism and Christianity and frequently mentioned in the Bible. It was said to have been the site of Christ's ascension, and the Garden of Gethsemane is located nearby. Its slopes have been a sacred Jewish burial ground for centuries. It is also known as Olivet.
olive branch the branch of an olive tree, traditionally regarded as a symbol of peace (in allusion to the story of Noah in Genesis 8:1, in which a dove returns with an olive branch after the Flood).

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Olea (olive; family Oleaceae) A genus of about 20 species of trees and shrubs in which the leaves are usually grey-green and elliptical or linear, and the fruits are berries rich in oil. They are widely distributed in the Old World. O. europaea (common olive) is much cultivated in Mediterranean climates for its fruits, for eating, and for olive-oil production, but its native home is probably Africa.

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olive Fruit of the evergreen tree, Olea europea; picked unripe when green or ripe when they have turned dark blue or purplish, and usually pickled in brine. Olives have been known since ancient times. The tree is extremely slow‐growing and continues to fruit for many years; there are claims that trees are still fruiting after 1000 years.

A 50–g portion (ten olives weighed with stones) contains 700 mg of sodium and 5 g of fat, of which 20% is saturated and 65% mono‐unsaturated; supplies 40 kcal (170 kJ).

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olive Tree, shrub or vine and its fruit, especially the common olive tree, Olea europaea, native to the Mediterranean region. It has leathery, lance-shaped leaves, a gnarled and twisted trunk and may live for more than 1000 years. The fruit is bitter and inedible before processing. Height: to 9m (30ft). Family Oleaceae. See also olive oil

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olive (ol-iv) n. a smooth oval swelling in the upper part of the medulla oblongata on each side. It contains a mass of nerve cells, mainly grey matter (olivary nucleus).
olivary adj.

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olive (fruit of) the evergreen tree Olea europaea. XIII. — (O)F. — L. olīva — Gr. elaí(F)ā, rel. to élai(F)on OIL.
Hence olivaceous XVII.