noun ·Rare ·Advanced level

Definitions

Noun

1. 1
   An unsaturated eight-membered heterocycle having seven carbon atoms, one nitrogen atom and four double bonds.

Etymology

From az(a)- (“containing nitrogen in place of carbon”) + oct- + -ine.

Related phrases

double bond

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