noun ·Rare ·Advanced level

Definitions

Noun

1. 1
   2,2,4,4,6,8,8-heptamethylnonane, a highly branched alkane used as a reference in determining the cetane number of diesel. uncountable

Etymology

From iso- + cetane.

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.