noun ·Rare ·Advanced level

Definitions

Noun

1. 1
   Any compound formally derived from a cumulene by replacing one or more carbon atoms of the cumulative bond system by another atom e.g. O=C=C=C=O

Etymology

From hetero- + cumulene.

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