nitro group

noun Chemistry.

the univalent group –NO2.

Origin of nitro group

First recorded in 1885–90
Also called nitro radical. Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for nitro group

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

    Coal|Raphael Meldola