nitro group

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noun Chemistry.

the univalent group –NO2.

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Nearby words

nitrite, nitrituria, nitro, nitro compound, nitro dye, nitro group, nitro-, nitro-chalk, nitrobacteria, nitrobenzene, nitroblue tetrazolium test

Origin of nitro group

First recorded in 1885–90

Also called nitro radical.

Dictionary.com 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