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cutwater the forward edge of a ship's prow. [2 definitions]
cutwork openwork embroidery in which some of the fabric is cut out from the design.
cutworm a caterpillar that feeds by night on a wide variety of plants, characteristically cutting through the plant stems at ground level.
-cy condition; quality. [3 definitions]
cyanamide a caustic, white, unstable compound prepared by the reaction of calcium cyanamide with sulfuric acid and used in chemical production.
cyanate a salt or ester of cyanic acid.
cyanic containing cyanogen. [2 definitions]
cyanic acid a colorless, poisonous, volatile acid with a pronounced odor of almonds.
cyanide a chemical compound that contains one carbon and one nitrogen atom together with another element such as potassium or sodium, both of which form extremely poisonous substances. [2 definitions]
cyanine any of several dyes that are used to sensitize photographic film to certain colors.
cyano- dark blue. [2 definitions]
cyanocobalamin a form of vitamin B12.
cyanogen a poisonous organic gas of carbon and nitrogen that is used for chemical warfare, as a rocket propellant, and in organic synthesis.
cyanosis the medical condition of bluish skin caused by lack of oxygen in the blood.
cyber- of, pertaining to, made by, or existing only on computers.
cybernation the use of computers to control and operate equipment, as in manufacturing.
cybernetics (used with a sing. verb) the science concerned with biological control and communication processes and their imitation by mechanical and electronic devices.
cyberspace the electronic medium of globally networked computers, esp. when conceived of as a three-dimensional space where online communication and transactions take place.
cycad a tropical evergreen plant resembling a palm, but having fernlike leaves.
cyclamate any of several noncaloric artificial sweeteners.
cyclamen any of various plants of the primrose family that bear brightly colored flowers and heart-shaped leaves.