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gum tree
gum tree name for the eucalyptus (see myrtle ) in Australia and for several other trees, e.g., the sweet gum, of the family Hamamelidaceae ( witch hazel family), and the black gum or tupelo in North America.
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Ujung Pandang
Ujung Pandang , formerly Makasar , city (1990 pop. 944,685), SW Sulawesi, capital of Sulawesi Selatan prov., Indonesia. The largest city in Sulawesi, it is one of Indonesia's important seaports, a distribution and transshipment point for goods from Europe and Asia. Exports include coffee, teak, s...
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gingivitis
gingivitis , inflammation of the gums. It may be acute, subacute, chronic, or recurrent. The gums usually become red, swollen, and spongy, and bleed easily. Chronic gingivitis is the usual form, resulting from irritating bacteria or debris, food impaction, or poor dental restoration. It can also acc...
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gum
gum term commonly applied to any of a wide variety of colloidal substances somewhat similar in appearance and general characteristics, exuded by or extracted from plants. In this classification, however, many substances that are not true gums are included, among them many resins , so-called gum re...
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Fireworks
Fireworks
Background
A firework is a device that uses combustion or explosion to produce a visual or auditory effect. Modern pyrotechnics also includes devices similar to fireworks, such as flares, matches, and even solid-fuel rocket boosters used in spaceflight.
The earliest ancestors of firewor...
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teeth
teeth hard, calcified structures embedded in the bone of the jaws of vertebrates that perform the primary function of mastication. Humans and most other mammals have a temporary set of teeth, the deciduous, or milk, teeth; in humans, they usually erupt between the 6th and 24th months. These number ...
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chewing gum
chewing gum confection consisting usually of chicle , flavorings, and corn syrup and sugar (or artificial sweeteners). Prehistoric people are believed to have chewed resins. Spruce resin was chewed as a thirst quencher by Native Americans, from whom pioneers adopted the custom. Refined paraffin wa...
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commodity market
commodity market organized traders' exchange in which standardized, graded products are bought and sold. Worldwide, there are 48 major commodity exchanges that trade over 96 commodities, ranging from wheat and cotton to silver and oil. Most trading is done in futures contracts, that is, agreements ...
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pyorrhea
pyorrhea , inflammation and degeneration of the gums and other tissues surrounding the teeth. The onset of the disease is marked by bleeding of the gums. As the disease proceeds, the gums recede from the teeth, loosening of the teeth occurs, and the bone supporting the teeth is resorbed. Pus is disc...
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tragacanth
tragacanth or gum tragacanth, gummy exudation from the leguminous shrub Astragalus gummifer and related pulse family plants of SE Europe and W Asia. It is obtained through incisions in the stem of the plant. The gum is produced chiefly in Iran. Tragacanth is almost insoluble in water but sw...
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