nitric bacteria
nitrobacteria | soil bacteria that convert nitrites to nitrates |
nitrate bacterium
nitric bacterium | any of the nitrobacteria that oxidize nitrites into nitrates |
nitrous oxide
laughing gas | inhalation anesthetic used as an anesthetic in dentistry and surgery |
| nitrogen narcosis | 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 cycle | 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 fixation | the assimilation of atmospheric nitrogen by soil bacteria and its release for plant use on the death of the bacteria |
| nitrogen balance | the balance between the amount of nitrogen taken in (to the soil or the body) and the amount given off (lost or excreted) |
titanium dioxide
titanium oxide
titanic oxide
titania | a white powder used as a pigment for its high covering power and durability |
barium monoxide
barium oxide
barium protoxide | an oxide of barium, a whitish toxic powder |
nitrogen
N
atomic number | a common nonmetallic element that is normally a colorless odorless tasteless inert diatomic gas, constitutes percent of the atmosphere by volume, a constituent of all living tissues |
periclase
magnesia
magnesium oxide | a white solid mineral that occurs naturally as periclase, a source of magnesium |
heavy water
deuterium oxide | water containing a substantial proportion of deuterium atoms, used in nuclear reactors |
nitric acid
aqua fortis | acid used especially in the production of fertilizers and explosives and rocket fuels |
| nitrogen oxide | any of several oxides of nitrogen formed by the action of nitric acid on oxidizable materials, present in car exhausts |
| nitrogen dioxide | a highly poisonous brown gas (NO) |
| nitric oxide | a poisonous red-brown gas (NO) |
arsenic arsenic trioxide
arsenous anhydride
arsenous oxide
white arsenic
ratsbane | a white powdered poisonous trioxide of arsenic, used in manufacturing glass and as a pesticide (rat poison) and weed killer |
calcium oxide
quicklime
lime calx
calcined lime
fluxing lime
unslaked lime
burnt lime | a white crystalline oxide used in the production of calcium hydroxide |
| copper oxide | an oxide of copper |
alumina
aluminum oxide
aluminium oxide | any of various forms of aluminum oxide occurring naturally as corundum |
aluminum hydroxide
aluminium hydroxide
hydrated aluminum oxide
hydrated aluminium oxide | white crystalline compound that occurs naturally as the mineral gibbsite |
| ferric oxide | a red oxide of iron |
hydroxide
hydrated oxide | a compound of an oxide with water |
| liquid nitrogen | nitrogen in a liquid state |
| nitrogen mustard | a toxic compound resembling mustard gas in structure, important in cancer treatment |
| oxide | any compound of oxygen with another element or a radical |
nitrogen trichloride
Agene | a yellow pungent volatile oil (trade name Agene) formerly used for bleaching and aging flour |
silica
silicon oxide
silicon dioxide | a white or colorless vitreous insoluble solid (SiO), various forms occur widely in the earth's crust as quartz or cristobalite or tridymite or lechatelierite |
sulfur oxide
sulphur oxide | any of several oxides of sulphur |
zinc oxide
flowers of zinc
philosopher's wool
philosophers' wool | oxide of zinc, a white powder used as a pigment or in cosmetics or glass or inks and in zinc ointment |
zirconium oxide
zirconia
zirconium dioxide | a white crystalline oxide, used in refractories and in insulation and abrasives and enamels and glazes |
| nitrogen-fixing | contributing to the process of nitrogen fixation |
nitrogenous
nitrogen-bearing | of or relating to or containing nitrogen |
azotic
nitric
nitrous | of or containing nitrogen, nitric acid |