Definition of valve

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Valve (n.) One or more membranous partitions, flaps, or folds, which permit the passage of the contents of a vessel or cavity in one direction, but stop or retard the flow in the opposite direction; as, the ileocolic, mitral, and semilunar valves..

Lern More About Valve

Saxhorn :: Saxhorn (n.) A name given to a numerous family of brass wind instruments with valves, invented by Antoine Joseph Adolphe Sax (known as Adolphe Sax), of Belgium and Paris, and much used in military bands and in orchestras..
Escalop :: Escalop (n.) A bivalve shell of the genus Pecten. See Scallop.
Valve :: Valve (n.) One of the pieces or divisions of bivalve or multivalve shells.
Ostrea :: Ostrea (n.) A genus of bivalve Mollusca which includes the true oysters.
Veneracea :: Veneracea (n. pl.) An extensive tribe of bivalve mollusks of which the genus Venus is the type. The shells are usually oval, or somewhat heartshaped, with a conspicuous lunule. See Venus..
Quinquevalvular :: Quinquevalvular (a.) Having five valves, as a pericarp..
Equivalvular :: Equivalvular (a.) Same as Equivalve or Equivalved.
Lead :: Lead (n.) The width of port opening which is uncovered by the valve, for the admission or release of steam, at the instant when the piston is at end of its stroke..
Bivalve :: Bivalve (n.) A mollusk having a shell consisting of two lateral plates or valves joined together by an elastic ligament at the hinge, which is usually strengthened by prominences called teeth. The shell is closed by the contraction of two transverse muscles attached to the inner surface, as in the clam, -- or by one, as in the oyster. See Mollusca..
Valvule :: Valvule (n.) A small valvelike process.
Skimmer :: Skimmer (n.) Any one of several large bivalve shells, sometimes used for skimming milk, as the sea clams, and large scallops..
Cyphonautes :: Cyphonautes (n.) The free-swimming, bivalve larva of certain Bryozoa..
Regulator :: Regulator (n.) A contrivance for regulating and controlling motion, as: (a) The lever or index in a watch, which controls the effective length of the hairspring, and thus regulates the vibrations of the balance. (b) The governor of a steam engine. (c) A valve for controlling the admission of steam to the steam chest, in a locomotive..
Equivalved :: Equivalved (a.) Having the valves equal in size and from, as in most bivalve shells..
Univalvular :: Univalvular (a.) Same as Univalve, a..
Gyration :: Gyration (n.) One of the whorls of a spiral univalve shell.
Slide :: Slide (n.) A slide valve.
Inequivalve :: Inequivalve (a.) Alt. of Inequivalvula.
Spat :: Spat (n.) A young oyster or other bivalve mollusk, both before and after it first becomes adherent, or such young, collectively..
Quadrivalve :: Quadrivalve (n.) A door, shutter, or the like, having four folds..
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