nitrofurantoin
— Navneord
– Engelsk
～ 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
— Navneord
– Engelsk
～ 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
— Navneord
– Engelsk
～ 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
nitrogen fixation
— Navneord
– Engelsk
～ the assimilation of atmospheric nitrogen by soil bacteria and its release for plant use on the death of the bacteria
nitrogen balance
— Navneord
– Engelsk
～ the balance between the amount of nitrogen taken in (to the soil or the body) and the amount given off (lost or excreted)
nitrogen dioxide
— Navneord
– Engelsk
～ a highly poisonous brown gas (NO2)
nitrogen narcosis
— Navneord
– Engelsk
～ confused or stuporous state caused by high levels of dissolved nitrogen in the blood; "deep-sea divers can suffer nitrogen narcosis from breathing air under high pressure"
nitrogen mustard
— Navneord
– Engelsk
～ a toxic compound resembling mustard gas in structure; important in cancer treatment
nitrogenase
— Navneord
– Engelsk
～ an enzyme of nitrogen-fixing microorganisms that catalyzes the conversion of nitrogen to ammonia
nitroglycerin
— Navneord
– Engelsk
～ 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)
nitroglycerine
— Navneord
– Engelsk
～ 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)
nitrohydrochloric acid
— Navneord
– Engelsk
～ a yellow fuming corrosive mixture of nitric and hydrochloric acid that dissolves metals (including gold)
nitrosobacteria
— Navneord
– Engelsk
～ soil bacteria that oxidize ammonia to nitrites
Nitrosomonas
— Navneord
– Engelsk
～ ellipsoidal soil bacteria
Nitrospan
— Navneord
– Engelsk
～ 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)
Nitrospan
— Navneord
– Engelsk
～ trade names for nitroglycerin used as a coronary vasodilator in the treatment of angina pectoris
Nitrostat
— Navneord
– Engelsk
～ 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)
Nitrostat
— Navneord
– Engelsk
～ trade names for nitroglycerin used as a coronary vasodilator in the treatment of angina pectoris
nitrous bacteria
— Navneord
– Engelsk
～ soil bacteria that oxidize ammonia to nitrites
nitrous bacterium
— Navneord
– Engelsk
～ any of the nitrobacteria that oxidize ammonia into nitrites