nitro group

noun

, Chemistry.

1. the univalent group –NO 2 .

Word History and Origins

Origin of nitro group¹

First recorded in 1885–90

Example Sentences

The residue of nitric acid which replaces hydrogen in benzene is the nitro-group, and the compound is nitrobenzene.

From Project Gutenberg

The nitro group behaves very similarly to the hydroxyl group.

From Project Gutenberg

Entrance of a nitro group strengthens the poisonous character.

From Project Gutenberg