noun ·Rare ·Advanced level

Definitions

Noun

1. 1
   A compound, composed of a ring of five nitrogen atoms, of formula (H-N<)₅; but especially, any organic derivative of such a compound. uncountable

Etymology

From cyclo- + penta- + azane.

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