pos>pref. 1. A combining form or an adjective denoting the presence of niter. [ 1913 Webster ]
2. (Chem.) 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 (C6H5.NO2). [ 1913 Webster ]
Nitro group, the radical NO2; -- called also nitroxyl. [ 1913 Webster ]
prop. n. A natural family of usually rod-shaped bacteria that oxidize ammonia or nitrites: nitrobacteria. Syn. -- family Nitrobacteriaceae. [ WordNet 1.5 ]
n. [ Nitro- + benzene. ] (Chem.) A yellow aromatic liquid (C6H5.NO2), produced by the action of nitric acid on benzene, and called from its odor imitation oil of bitter almonds, or essence of mirbane. It is used in perfumery, and is manufactured in large quantities in the preparation of aniline. Fornerly called also nitrobenzol. [ 1913 Webster ]
n. [ Nitro- + calcite. ] (Min.) Nitrate of calcium, a substance having a grayish white color, occuring in efflorescences on old walls, and in limestone caves, especially where there exists decaying animal matter. [ 1913 Webster ]
(n) any of the bacteria in the soil that take part in the nitrogen cycle; they oxidize ammonium compounds into nitrites or oxidize nitrites into nitrates
(n) derivative of nitrofuran used as an antibacterial medicine (trade name Macrodantin) effective against a broad range of Gram-positive and Gram-negative bacteria; used to treat infections of the urinary tract, Syn.Macrodantin
(n) a common nonmetallic element that is normally a colorless odorless tasteless inert diatomic gas; constitutes 78 percent of the atmosphere by volume; a constituent of all living tissues, Syn.N, atomic number 7
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