Botany: General

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heartwood

The Columbia Encyclopedia, 6th ed. | 2011 | Copyright

heartwood the central, woody core of a tree, no longer serving for the conduction of water and dissolved minerals; heartwood is usually denser and darker in color than the outer sapwood . Before the synthesis of aniline dyes, the heartwood of several tropical trees (sold collectively under the commercial name brazilwood ) was used to produce blue, purple, and red dyes. As a tree becomes older, the heartwood increases in diameter, whereas the sapwood remains about the same thickness. See wood .

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heartwood

A Dictionary of Biology | 2004 | Copyright

heartwood (duramen) The wood at the centre of a tree trunk or branch. It consists of dead xylem cells heavily thickened with lignin and provides structural support. Many heartwood cells contain oils, gums, and resins, which darken the wood. Compare sapwood.

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heartwood

A Dictionary of Ecology | 2004 | | Copyright

heartwood The dead, woody centre of the trunk of a tree. The cells become impregnated with various organic compounds which cause a change in colour, so that this tissue is distinguished easily from the remainder of the wood.

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MICHAEL ALLABY. "heartwood." A Dictionary of Ecology. 2004. Encyclopedia.com. 26 May. 2012 <http://www.encyclopedia.com>.

MICHAEL ALLABY. "heartwood." A Dictionary of Ecology. 2004. Encyclopedia.com. (May 26, 2012). http://www.encyclopedia.com/doc/1O14-heartwood.html

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heartwood

A Dictionary of Plant Sciences | 1998 | | Copyright

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MICHAEL ALLABY. "heartwood." A Dictionary of Plant Sciences. 1998. Encyclopedia.com. 26 May. 2012 <http://www.encyclopedia.com>.

MICHAEL ALLABY. "heartwood." A Dictionary of Plant Sciences. 1998. Encyclopedia.com. (May 26, 2012). http://www.encyclopedia.com/doc/1O7-heartwood.html

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heartwood

Oxford Dictionary of Rhymes | 2007 | Copyright

heartwood •could, good, hood, Likud, misunderstood, pud, should, stood, understood, withstood, wood, would •Gielgud • manhood • maidenhood •nationhood • statehood • sainthood •priesthood • kinghood • babyhood •likelihood • livelihood • puppyhood •childhood • wifehood • knighthood •falsehood • widowhood • boyhood •cousinhood • adulthood •neighbourhood (US neighborhood) •husbandhood • bachelorhood •toddlerhood • womanhood •parenthood • sisterhood •spinsterhood • fatherhood •brotherhood, motherhood •girlhood • Talmud • Malamud •matchwood • Dagwood • Blackwood •sandalwood • sapwood • basswood •Atwood •Harewood, Larwood •hardwood • lancewood • heartwood •redwood • Wedgwood • Elmwood •bentwood • Hailwood • lacewood •beechwood • greenwood • Eastwood •cheesewood • driftwood • stinkwood •Littlewood • giltwood • Hollywood •satinwood • plywood • wildwood •pinewood • whitewood • softwood •dogwood, logwood •cottonwood • coachwood • rosewood •fruitwood • Goodwood • brushwood •firewood • ironwood • underwood •Isherwood • wormwood

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Free newspaper and magazine articles

	NATURAL DECAY RESISTANCE OF HEARTWOOD FROM DEAD, STANDING YELLOW-CEDAR TREES:... Magazine article from: Forest Products Journal; 1/1/2000
	Influence of site on sapwood and heartwood ratios of Turkish calabrian pine. Magazine article from: Forest Products Journal; 4/1/2003
	Models for predicting vertical profiles of heartwood diameter in mature Scots... Magazine article from: Canadian Journal of Forest Research; 3/1/2009