hydrocarbonaceous

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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