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caterwaul to make the long, wailing or screeching sounds of a cat in heat. [3 definitions]
catfish any of several chiefly freshwater fish with large heads, long feelers around the mouth resembling a cat's whiskers, and no scales.
catgut a thin, strong cord made of twisted, dried animal intestines, esp. those of sheep, and used for the strings of tennis rackets and certain musical instruments, and as surgical thread.
cath- variant of cata-.
catharsis purging, esp. of the digestive system. [3 definitions]
cathartic of or pertaining to purgation or emotional catharsis; purgative. [2 definitions]
Cathay a former name for China.
cathead a beam projecting from the bow of a ship, to which the anchor is hoisted and secured.
cathect in psychoanalysis, to invest feeling or emotion in someone or something external to oneself.
cathedra the official seat of a bishop.
cathedral the principal church of a bishop's diocese, containing his official throne. [5 definitions]
catheter a thin, flexible, hollow tube inserted into a body passage or cavity to drain fluid, esp. urine from the bladder.
catheterize to put a catheter into.
cathode the positive terminal of a battery. (Cf. anode.)
cathode ray a stream of electrons emitted by a cathode in a vacuum tube.
cathode-ray tube a vacuum tube in which a stream of electrons is accelerated and focused in a beam that produces lighted traces on a screen at one end of the tube, used in television sets, computer monitors, and the like.
catholic all-encompassing or wide-ranging. [3 definitions]
Catholicism the theological and moral doctrines, the faith, and the ecclesiastical practices of the Roman Catholic Church.
catholicity the quality or state of being broad-minded or of having a wide range of ideas or tastes. [2 definitions]
catholicize to make universal or general. [2 definitions]
cation an ion with a positive charge. (Cf. anion.)