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terpene

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ter⋅pene

  [tur-peen]
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–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; alter. of terebene, with p from turpentine

Related forms:
ter⋅pene⋅less, adjective
ter⋅pe⋅nic  [tur-pee-nik] , adjective
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
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ter·pene   (tûr'pēn')   
n.  Any of various unsaturated hydrocarbons, C10H16, found in essential oils and oleoresins of plants such as conifers and used in organic syntheses.

[Obsolete terp(entine), variant of turpentine + -ene.]
ter·pe'nic adj., ter'pe·noid' adj. & n.
The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2009 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Medical Dictionary

Main Entry: ter·pene
Pronunciation: 't&r-"pEn
Function: noun
: any of various isomeric hydrocarbons C10H16 found present inessential oils (as from conifers) and used especially as solvents and in organic synthesis; broadly : any of numerous hydrocarbons (C5H8)n foundespecially in essential oils, resins, and balsams —ter·pene·less /-l&s/ adjective —ter·pe·nic /"t&r-'pE-nik,-'pen-ik/ adjective
Merriam-Webster's Medical Dictionary, © 2002 Merriam-Webster, Inc.
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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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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.

Learn more about terpene with a free trial on Britannica.com.

Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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