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Definitions for Valve

[1] any device for halting or controlling the flow of a liquid, gas, or other material through a passage, pipe, inlet, outlet, etc.
[2] a hinged lid or other movable part that closes or modifies the passage in such a device.
[3] Anatomy . a membranous fold or other structure that controls the flow of a fluid, as one that permits blood to flow in one direction only.
[4] (in musical wind instruments of the trumpet class) a device for changing the length of the air column to alter the pitch of a tone.
[5] Zoology . one of the two or more separable pieces composing certain shells. either half of the silicified shell of a diatom.
[6] Botany . one of the segments into which a capsule dehisces. a flap or lidlike part of certain anthers.
[7] Electronics (chiefly British ) . vacuum tube(def 1) .
[8] Archaic . one of the leaves of a double or folding door.
[9] to provide with a means of controlling the flow of liquid, gas, etc., by inserting a valve.
[10] any device that shuts off, starts, regulates, or controls the flow of a fluid
[11] anatomy a flaplike structure in a hollow organ, such as the heart, that controls the one-way passage of fluid through that organ
[12] Also called: tube , vacuum tube an evacuated electron tube containing a cathode, anode, and, usually, one or more additional control electrodes. When a positive potential is applied to the anode, electrons emitted from the cathode are attracted to the anode, constituting a flow of current which can be controlled by a voltage applied to the grid to produce amplification, oscillation, etc See also diode (def. 2), triode (def. 1), tetrode, pentode
[13] zoology any of the separable pieces that make up the shell of a mollusc
[14] music a device on some brass instruments by which the effective length of the tube may be varied to enable a chromatic scale to be produced
[15] botany any of the several parts that make up a dry dehiscent fruit, esp a capsule either of the two halves of a diatom cell wall
[16] archaic a leaf of a double door or of a folding door

Words related to Valve

pipe, faucet, spigot, lid, plug, stopper, tap, hydrant, gate, cock, flap, shutoff

Words nearby Valve

valuer general, valuta, valval, valvar, valvate, valve, valve gear, valve lifter, valve spring, valve stem, valve trombone

Origin of Valve

1350–1400; Middle English < Latin valvae leaves of a door

Other words from Valve

valve·less , adjective
valve·like , adjective
un·der·valve , noun

Word origin for Valve

C14: from Latin valva a folding door

Synonyms for Valve

faucet, pipe, spigot, cock, flap, gate, hydrant, lid, plug, stopper, tap, shutoff