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Nitrifications
- noun - the chemical process in which a nitro group is added to an organic compound (or substituted for another group in an organic compound)
- the oxidation of ammonium compounds in dead organic material into nitrates and nitrites by soil bacteria (making nitrogen available to plants)
Nitrobacterium
- noun - 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
Nitrocellulose
- noun - a nitric acid ester; used in lacquers and explosives
Nitrofurantoin
- noun - 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
Nitrogen Cycle
- noun - the circulation of nitrogen; nitrates from the soil are absorbed by plants which are eaten by animals that die and decay returning the nitrogen back to the soil
Nitrogen Oxide
- noun - any of several oxides of nitrogen formed by the action of nitric acid on oxidizable materials; present in car exhausts
Nitroglycerine
- noun - a heavy yellow poisonous oily explosive liquid obtained by nitrating glycerol; used in making explosives and medically as a vasodilator (trade names Nitrospan and Nitrostat)
Nitroglycerins
- noun - a heavy yellow poisonous oily explosive liquid obtained by nitrating glycerol; used in making explosives and medically as a vasodilator (trade names Nitrospan and Nitrostat)
Nitromagnesite
- - Nitrate of magnesium, a saline efflorescence closely resembling nitrate of calcium.
Nitrosaccharin
- - An explosive nitro derivative of certain sugars, analogous to nitroglycerin, gun cotton, etc.