isooctane Hear it!

isooctane definition

iso·oc·tane (ī′sō äk′tān, -sə-)

noun

a liquid hydrocarbon, (CH)CHCHC(CH), used with normal heptane to prepare antiknock rating standards and arbitrarily assigned an octane rating of 100

Etymology: iso- + octane

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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