Definition of valve

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Valve (n.) One of the two similar portions of the shell of a diatom.

Lern More About Valve

Discina :: Discina (n.) A genus of Branchiopoda, having a disklike shell, attached by one valve, which is perforated by the peduncle..
Hydrant :: Hydrant (n.) A discharge pipe with a valve and spout at which water may be drawn from the mains of waterworks; a water plug.
Dolium :: Dolium (n.) A genus of large univalve mollusks, including the partridge shell and tun shells..
Replum :: Replum (n.) The framework of some pods, as the cress, which remains after the valves drop off..
Mytilus :: Mytilus (n.) A genus of marine bivalve shells, including the common mussel. See Illust. under Byssus..
Lunule :: Lunule (n.) A special area in front of the beak of many bivalve shells. It sometimes has the shape of a double crescent, but is oftener heart-shaped. See Illust. of Bivalve..
Nucleus :: Nucleus (n.) The tip, or earliest part, of a univalve or bivalve shell..
Eccentric :: Eccentric (n.) A disk or wheel so arranged upon a shaft that the center of the wheel and that of the shaft do not coincide. It is used for operating valves in steam engines, and for other purposes. The motion derived is precisely that of a crank having the same throw..
Syringed :: Syringe (n.) A kind of small hand-pump for throwing a stream of liquid, or for purposes of aspiration. It consists of a small cylindrical barrel and piston, or a bulb of soft elastic material, with or without valves, and with a nozzle which is sometimes at the end of a flexible tube; -- used for injecting animal bodies, cleansing wounds, etc..
Multivalve :: Multivalve (n.) Any mollusk which has a shell composed of more than two pieces.
Sea Clam :: Sea clam () Any one of the large bivalve mollusks found on the open seacoast, especially those of the family Mactridae, as the common American species. (Mactra, / Spisula, solidissima); -- called also beach clam, and surf clam..
Valve :: Valve (n.) One of the pieces or divisions of bivalve or multivalve shells.
Organ :: Organ (n.) A component part performing an essential office in the working of any complex machine; as, the cylinder, valves, crank, etc., are organs of the steam engine..
Conch :: Conch (n.) A name applied to various marine univalve shells; esp. to those of the genus Strombus, which are of large size. S. gigas is the large pink West Indian conch. The large king, queen, and cameo conchs are of the genus Cassis. See Cameo..
Cephalata :: Cephalata (n. pl.) A large division of Mollusca, including all except the bivalves; -- so called because the head is distinctly developed. See Illustration in Appendix..
Clack :: Clack (v. t.) Anything that causes a clacking noise, as the clapper of a mill, or a clack valve..
Strombite :: Stromb (n.) Any marine univalve mollusk of the genus Strombus and allied genera. See Conch, and Strombus..
Valvate :: Valvate (a.) Opening as if by doors or valves, as most kinds of capsules and some anthers..
Boat Shell :: Boat shell () A marine univalve shell of the genus Cymba.
Escalop :: Escalop (n.) A bivalve shell of the genus Pecten. See Scallop.
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