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hemiterpene

[hem-i-tur-peen]

noun Chemistry.

See under terpene (def. 2).

Origin:
hemi- + terpene

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Hemiterpene is always a great word to know.

So is inorganic. Does it mean:

pertaining to compounds that are not hydrocarbons or their derivatives

selecting for combination or action; tending to combine with certain substances in preference to others, such as elective attraction

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Dictionary.com Unabridged

noun Chemistry.

(originally) any of a class of monocyclic hydrocarbons of the formula C₁₀H₁₆, obtained from plants.

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

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. 2012.
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Collins

World English Dictionary

hemiterpene (ˌhɛmɪˈtɜːpiːn)

—n
	any of a class of simple unsaturated hydrocarbons, such as isoprene, having the formula C₅H₈

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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Related Words

terpene

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hemiterpene

hem·i·ter·pene

ter·pene