| 释义 |
WordReference Random House Learner's Dictionary of American English © 2024valve /vælv/USA pronunciation n., v., valved, valv•ing. n. [countable] - any device for halting or controlling the flow of something, as a liquid, through a pipe or other passage.
- a hinged lid or other movable part that closes or changes the passage in such a device.
- a structure in the body that permits the flow of a fluid, as blood, in one direction only:a heart valve.
- Music and Dance(in musical wind instruments of the trumpet class) a device for changing the length of the air column so as to alter the pitch of a tone.
- Zoologyone of the two or more separable pieces that make up certain shells:the valves of a clamshell.
v. [~ + object] - to provide with a valve.
WordReference Random House Unabridged Dictionary of American English © 2024valve (valv),USA pronunciation n., v., valved, valv•ing.
n. - any device for halting or controlling the flow of a liquid, gas, or other material through a passage, pipe, inlet, outlet, etc.
- a hinged lid or other movable part that closes or modifies the passage in such a device.
- [Anat.]a membranous fold or other structure that controls the flow of a fluid, as one that permits blood to flow in one direction only.
- Music and Dance(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.
- Zoology
- one of the two or more separable pieces composing certain shells.
- either half of the silicified shell of a diatom.
- [Bot.]
- Botanyone of the segments into which a capsule dehisces.
- Botanya flap or lidlike part of certain anthers.
- ElectronicsSee vacuum tube (def. 1).
- [Archaic.]one of the leaves of a double or folding door.
v.t. - to provide with a means of controlling the flow of liquid, gas, etc., by inserting a valve.
- Latin valvae leaves of a door
- Middle English 1350–1400
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