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noun Chemistry.
1.
any of 18 isomeric saturated hydrocarbons having the formula C8H18, some of which are obtained in the distillation and cracking of petroleum.
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Based on the Random House Dictionary, © Random House, Inc. 2012.
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Octane
is always a great word to know.
So is butane. Does it mean:
| existing as free, uncombined atoms |
| a colorless, flammable gas, C4H10, a saturated aliphatic existing in two isometric forms: used chiefly in the manufacture of rubber and as fuel |
Collins
World English Dictionary
| octane (ˈɒkteɪn) | |
| —n | |
| See also isooctane a liquid alkane hydrocarbon found in petroleum and existing in 18 isomeric forms, esp the isomer n-octane. Formula: C8H18 | |
Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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Etymonline
Word Origin & History
octane
hydrocarbon of the methane series, 1872, coined from octo- (from Gk. okto "eight;" see eight) + -ane, as in methane; so called because it has eight carbon atoms. A fuel's octane rating, in ref. to its anti-knocking quality, is attested from 1932.
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Science Dictionary
octane  (ŏk'tān') Pronunciation Key
Any of several hydrocarbons having eight carbon atoms connected by single bonds. It is commonly added to gasoline to prevent knocking from uneven burning of fuel in internal-combustion engines. Octane is the eighth member of the alkane series. Chemical formula: C8H18. |
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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