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 |
bicycle bike wheel cycle | a wheeled vehicle that has two wheels and is moved by foot pedals |
carbon carbon copy | a copy made with carbon paper |
carbon arc lamp carbon arc | has carbon electrodes |
organic light-emitting diode OLED | a self-luminous diode (it glows when an electrical field is applied to the electrodes) that does not require backlighting or diffusers |
pedicab cycle rickshaw | a tricycle (usually propelled by pedalling), used in the Orient for transporting passengers for hire, boys who once pulled rickshaws now pedal pedicabs |
tetrachlorethylene tetrachloroethylene ethylene tetrachloride carbon dichloride | anthelmintic agent used against hookworm and other nematodes |
body organic structure physical structure | the entire structure of an organism (an animal, plant, or human being), he felt as if his whole body were on fire |
organic chemistry | the chemistry of compounds containing carbon (originally defined as the chemistry of substances produced by living organisms but now extended to substances synthesized artificially) |
theory of evolution theory of organic evolution evolutionism | (biology) a scientific theory of the origin of species of plants and animals |
fundamental law organic law constitution | law determining the fundamental political principles of a government |
carbon process | a process of printing on paper coated with bichromated gelatin containing pigment |
cycle of rebirth | (Hinduism) repeated rebirth in new forms |
cycle oscillation | a single complete execution of a periodically repeated phenomenon, a year constitutes a cycle of the seasons |
cardiac cycle | the complete cycle of events in the heart from the beginning of one heart beat to the beginning of the next, an electrical impulse conducted through the heart muscle that constricts the atria which is followed by constriction of the ventricles, the cardiac cycle can be shown on an electrocardiogram |
Carnot cycle Carnot's ideal cycle | a cycle (of expansion and compression) of an idealized reversible heat engine that does work without loss of heat |
cycle | a periodically repeated sequence of events, a cycle of reprisal and retaliation |
business cycle trade cycle | recurring fluctuations in economic activity consisting of recession and recovery and growth and decline |
cycle | a series of poems or songs on the same theme, Schubert's song cycles |
organic phenomenon | (biology) a natural phenomenon involving living plants and animals |
food web food cycle | (ecology) a community of organisms where there are several interrelated food chains |
life cycle | a series of stages through which an organism passes between recurrences of a primary stage |
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 |
evolution organic evolution phylogeny phylogenesis | (biology) the sequence of events involved in the evolutionary development of a species or taxonomic group of organisms |
Krebs cycle Krebs citric acid cycle citric acid cycle tricarboxylic acid cycle | in all plants and animals: a series of enzymatic reactions in mitochondria involving oxidative metabolism of acetyl compounds to produce high-energy phosphate compounds that are the source of cellular energy |
life cycle | the course of developmental changes in an organism from fertilized zygote to maturity when another zygote can be produced |
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 |
organic process biological process | a process occurring in living organisms |
vicious circle vicious cycle | one trouble leads to another that aggravates the first |
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 |
organic disorder | disorder caused by a detectable physiological or structural change in an organ |
acute brain disorder acute organic brain syndrome | any disorder (as sudden confusion or disorientation) in an otherwise normal person that is due to reversible (temporary) impairment of brain tissues (as by head injuries or drugs or infection) |
organic brain syndrome | mental abnormality resulting from disturbance of the structure or function of the brain |
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 |
organic compound | any compound of carbon and another element or a radical |
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 |
organic organic fertilizer organic fertiliser | a fertilizer that is derived from animal or vegetable matter |