octane Hear it!

octane definition

oc·tane (äk′tān′)

noun

an oily alkane, CH, occurring in petroleum, or any of a group of isomers of this substance

Etymology: oct- + -ane

Webster's New World College Dictionary Copyright © 2009 by Wiley Publishing, Inc., Cleveland, Ohio.
Used by arrangement with John Wiley & Sons, Inc.

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