noun Chemistry.

a colorless liquid, C7H17, having high antiknock properties as a fuel: used chiefly as an admixture to airplane gasolines.

Origin of triptane

1940–45; tri(methyl) b(u)tane (with p for b before t). See tri-, methyl Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

British Dictionary definitions for triptane



a colourless highly flammable liquid alkane hydrocarbon, isomeric with heptane, used in aviation fuel; 2,2,3-trimethylbutane. Formula: CH 3 C(CH 3) 2 CH(CH 3)CH 3

Word Origin for triptane

C20: shortened and altered from trimethylbutane; see tri-, methyl, butane
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012