Nearby Words

terpene

[tur-peen]

ter·pene

[tur-peen]
noun Chemistry.
1.
(originally) any of a class of monocyclic hydrocarbons of the formula C10H16, obtained from plants.
2.
this class or any of its oxygenated derivatives, any hydrocarbon from the same source having the formula C5H8 (hemiterpene), the formula C10H16 with an aliphatic structure (acyclic terpene) or two-ringed structure (bicyclic terpene), the formula C15H24 (sesquiterpene), etc., and any of their oxygenated derivatives.

Origin:
1865–70; alteration of terebene, with p from turpentine

ter·pene·less, adjective
ter·pe·nic [tur-pee-nik] , adjective
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2012.
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Terpene is always a great word to know.
So is reagent. Does it mean:
a substance that, because of the reactions it causes, is used in analysis and synthesis
a colorless, oily, water-soluble, highly toxic, liquid alkaloid, C10H14N2, found in tobacco and valued as an insecticide
Collins
World English Dictionary
terpene (ˈtɜːpiːn)
 
n
any one of a class of unsaturated hydrocarbons, such as the carotenes, that are found in the essential oils of many plants. Their molecules contain isoprene units and have the general formula (C5H8)n
 
[C19: terp- from obsolete terpentineturpentine + -ene]
 
ter'penic
 
adj

Collins English Dictionary - Complete & Unabridged 10th Edition
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American Heritage
Medical Dictionary

terpene ter·pene (tûr'pēn')
n.
Any of various unsaturated hydrocarbons in essential oils and certain resins of plants and used in organic syntheses.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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American Heritage
Science Dictionary
terpene   (tûr'pēn')  Pronunciation Key 
Any of a class of hydrocarbons consisting of two or more isoprene (C5H8) units joined together. Simple terpenes are found in the essential oils and resins of plants such as conifers. Turpentine, for example, is such an oil. More complex terpenes include vitamin A, carotenoid pigments (such as lycopene), squalene, and rubber. Terpenes are used in organic synthesis.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Encyclopedia Britannica
Encyclopedia

terpene

any of a class of hydrocarbons occurring widely in plants and animals and empirically regarded as built up from isoprene, a hydrocarbon consisting of five carbon atoms attached to eight hydrogen atoms (C5H8). The term is often extended to the terpenoids, which are oxygenated derivatives of these hydrocarbons.

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Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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