nitro-

Ni"tro- (. 1. A combining form or an adjective denoting the presence of niter. 2. (Chem.) Defn: A combining form (used also adjectively) designating certain compounds of nitrogen or of its acids, as nitrohydrochloric, nitrocalcite; also, designating the group or radical NO2, or its compounds, as nitrobenzene. Nitro group, the radical NO2; -- called also nitroxyl.

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