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nitro group

noun, Chemistry.
the univalent group –NO 2 .
Also called nitro radical.
Origin of nitro group
1885-90 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2016.
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Historical Examples
  • The residue of nitric acid which replaces hydrogen in benzene is the nitro-group, and the compound is nitrobenzene.

    Coal Raphael Meldola

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