radiocarbon dating carbon dating carbon- dating | a chemical analysis used to determine the age of organic materials based on their content of the radioisotope carbon-, believed to be reliable up to , years |
carbon carbon copy | a copy made with carbon paper |
carbon arc lamp carbon arc | has carbon electrodes |
tetrachlorethylene tetrachloroethylene ethylene tetrachloride carbon dichloride | anthelmintic agent used against hookworm and other nematodes |
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 |
carbon process | a process of printing on paper coated with bichromated gelatin containing pigment |
carbon cycle | a thermonuclear reaction in the interior of stars |
carbon cycle | the organic circulation of carbon from the atmosphere into organisms and back again |
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) |
respiratory acidosis carbon dioxide acidosis | acidosis resulting from reduced gas exchange in the lungs (as in emphysema or pneumonia), excess carbon dioxide combines with water to form carbonic acid which increases the acidity of the blood |
carbon monoxide poisoning | a toxic condition that results from inhaling and absorbing carbon monoxide gas, carbon monoxide combines with hemoglobin and displaces oxygen in the blood |
carbon nanotube nanotube | a fullerene molecule having a cylindrical or toroidal shape |
carbon C atomic number | an abundant nonmetallic tetravalent element occurring in three allotropic forms: amorphous carbon and graphite and diamond, occurs in all organic compounds |
carbon atom | an atom of carbon |
radiocarbon carbon | a radioactive isotope of carbon |
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 |
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) |
carbon black lampblack soot smut crock | a black colloidal substance consisting wholly or principally of amorphous carbon and used to make pigments and ink |
activated carbon activated charcoal | powdered or granular carbon used for purifying by adsorption, given orally (as a slurry) it is an antidote for some kinds of poisons |
carbon dioxide CO carbonic acid gas | a heavy odorless colorless gas formed during respiration and by the decomposition of organic substances, absorbed from the air by plants in photosynthesis |
carbon disulfide | a toxic colorless flammable liquid (CS), used in the manufacture of rayon and cellophane and carbon tetrachloride and as a solvent for rubber |
carbon monoxide carbon monoxide gas CO | an odorless very poisonous gas that is a product of incomplete combustion of carbon |
carbon paper carbon | a thin paper coated on one side with a dark waxy substance (often containing carbon), used to transfer characters from the original to an under sheet of paper |
carbon tetrachloride carbon tet tetrachloromethane perchloromethane | a colorless nonflammable liquid used as a solvent for fats and oils, because of its toxicity its use as a cleaning fluid or fire extinguisher has declined |
carbon tetrahalide | compounds composed of carbon and halogen molecules |
carbon steel | steel whose characteristics are determined by the amount of carbon it contains |
liquid nitrogen | nitrogen in a liquid state |
nitrogen mustard | a toxic compound resembling mustard gas in structure, important in cancer treatment |
nitrogen trichloride Agene | a yellow pungent volatile oil (trade name Agene) formerly used for bleaching and aging flour |
nitrogen-fixing | contributing to the process of nitrogen fixation |
nitrogenous nitrogen-bearing | of or relating to or containing nitrogen |