hydrocarbon

[hahy-druh-kahr-buhn, hahy-druh-kahr-]
noun
any of a class of compounds containing only hydrogen and carbon, as an alkane, methane, CH 4 , an alkene, ethylene, C 2 H 4 , an alkyne, acetylene, C 2 H 2 , or an aromatic compound, benzene, C 6 H 6 .

Origin:
1820–30; hydro-2 + carbon

hydrocarbonaceous, adjective
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World English Dictionary
hydrocarbon (ˌhaɪdrəʊˈkɑːbən)
 
n
any organic compound containing only carbon and hydrogen, such as the alkanes, alkenes, alkynes, terpenes, and arenes

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Etymonline
Word Origin & History

hydrocarbon
1826, "compound of hydrogen and carbon," formed in Eng. from hydro-, comb. form of Gk. hydor "water" (see water (n.1)) + carbon.
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Medical Dictionary

hydrocarbon hy·dro·car·bon (hī'drə-kär'bən)
n.
An organic compound, such as benzene and methane, that contains only carbon and hydrogen.

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
hydrocarbon   (hī'drə-kär'bən)  Pronunciation Key 
Any of numerous organic compounds, such as benzene, that contain only carbon and hydrogen.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Example sentences
The process breaks the manure's long hydrocarbon chains down into shorter ones.
He uses his country's vast hydrocarbon reserves to bully the neighbours.
Saturated fatty acids have rigid hydrocarbon tails while unsaturated fatty
  acids have bent hydrocarbon tails.
These can be re-formed into hydrocarbon molecules that can be used in place of
  gasoline or diesel.
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