cycad | (noun) any tropical gymnosperm of the order Cycadales; having unbranched stems with a crown of fernlike leaves | - |
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cyclamate | (noun) any salt or ester of cyclamic acid. | - |
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cyclamen | (noun) Mediterranean plant widely cultivated as a houseplant for its showy dark green leaves splotched with silver and nodding white or pink to reddish flowers with reflexed petals | Synonyms: Cyclamen purpurascens |
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cycle | (noun) a wheeled vehicle that has two wheels and is moved by foot pedals | Synonyms: bicycle, bike, wheel |
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(noun) a single complete execution of a periodically repeated phenomenon | Synonyms: oscillation |
(noun) a periodically repeated sequence of events | - |
(noun) a series of poems or songs on the same theme | - |
(noun) an interval during which a recurring sequence of events occurs | Synonyms: rhythm, round |
(noun) the unit of frequency; one hertz has a periodic interval of one second (named for Heinrich Rudolph Hertz) | Synonyms: cps, cycle per second, cycles/second, hertz, Hz |
cyclicity | (noun) the quality of recurring at regular intervals | Synonyms: periodicity |
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cycling | (noun) the sport of traveling on a bicycle or motorcycle | - |
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cyclist | (noun) a person who rides a bicycle | Synonyms: bicycler, bicyclist, biker, wheeler |
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cycloalkene | (noun) alkene hydrocarbon which contains a closed ring of carbon atoms, but has no aromatic character. | Synonyms: cycloolefin |
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cyclobenzaprine | (noun) muscle relaxant (trade name Flexeril) used for muscle spasms or acute injury | Synonyms: Flexeril |
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cyclohexanol | (noun) a colorless oily alcohol that smells like camphor | - |
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cycloid | (noun) a line generated by a point on a circle rolling along a straight line | - |
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cyclone | (noun) a violent rotating windstorm | - |
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(noun) (meteorology) rapid inward circulation of air masses about a low pressure center; circling counterclockwise in the Northern Hemisphere and clockwise in the southern | - |
cycloolefin | (noun) alkene hydrocarbon which contains a closed ring of carbon atoms, but has no aromatic character. | Synonyms: cycloalkene |
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cyclooxygenase | (noun) either of two related enzymes that control the production of prostaglandins and are blocked by aspirin | Synonyms: Cox |
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cyclopaedia | (noun) a reference work (often in several volumes) containing articles on various topics (often arranged in alphabetical order) dealing with the entire range of human knowledge or with some particular specialty | Synonyms: cyclopedia, encyclopaedia, encyclopedia |
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cyclopedia | (noun) a reference work (often in several volumes) containing articles on various topics (often arranged in alphabetical order) dealing with the entire range of human knowledge or with some particular specialty | Synonyms: cyclopaedia, encyclopaedia, encyclopedia |
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cyclopia | (noun) a developmental abnormality in which there is only one eye | - |
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cyclopropane | (noun) a colorless flammable gas sometimes used as an inhalation anesthetic | - |
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cyclops | (noun) minute free-swimming freshwater copepod having a large median eye and pear-shaped body and long antennae used in swimming; important in some food chains and as intermediate hosts of parasitic worms that affect man e.g. Guinea worms | Synonyms: water flea |
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cyclorama | (noun) a picture (or series of pictures) representing a continuous scene | Synonyms: diorama, panorama |
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cycloserine | (noun) an antibiotic that is especially active against the tubercle bacillus | - |
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cyclosis | (noun) the circulation of cytoplasm within a cell | Synonyms: streaming |
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cyclostome | (noun) primitive aquatic vertebrate | - |
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cyclostyle | (noun) a writing implement with a small toothed wheel that cuts small holes in a stencil | - |
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cyclothymia | (noun) a mild bipolar disorder that persists over a long time | Synonyms: cyclic disorder, cyclothymic disorder |
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cyclotron | (noun) an accelerator that imparts energies of several million electron-volts to rapidly moving particles | - |
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