noun ·Rare ·Advanced level

Definitions

Noun

1. 1
   A divalent functional group, >N.N=O.
2. 2
   Any of a class of carcinogenic organic compounds containing this group, prepared by the reaction of amines with nitrites.

Etymology

From nitroso + amine.

Related phrases

functional group

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