triptane definition by Webster's New World
Webster's New World College Dictionary Copyright © 2010 by Wiley Publishing, Inc., Cleveland, Ohio. Used by arrangement with John Wiley & Sons, Inc.
a liquid alkane, (CH)CHC(CH), used as a high antiknock fuel in internal-combustion engines, esp. in airplanes
Origin: contr. ; from tripentane: see tri- and amp; pentane
triptane definition by American Heritage Dictionary
A colorless liquid antiknock additive, C7H16, used in aviation fuels.
Origin: Shortening and alteration of trimethylbutane : tri- + methyl + butane.