valve


valve
valve [valv]
n.
[ME, a door leaf < L valva, leaf of a folding door, akin to volvere, to roll: see WALK; VALVE senses 3, 4, 8 < ModL valva < L]
1. Archaic either of the halves of a double door or any of the leaves of a folding door
2. a gate regulating the flow of water in a sluice, channel, etc.
3. Anat. a membranous fold or structure which permits body fluids to flow in one direction only, or opens and closes a tube, chamber, etc.
4. Bot.
a) any of the segments into which a pod or capsule separates when it bursts open
b) a lidlike part in some anthers, through which pollen is discharged
c) either of the boxlike halves forming the cell walls of a diatom
5. Electronics
a) a device, esp. a rectifier, that allows current to flow in only one direction
b) [Brit.] ELECTRON TUBE
6. Mech.
a) any device in a pipe or tube that permits a flow in one direction only, or regulates the flow of whatever is in the pipe, by means of a flap, lid, plug, etc. acting to open or block passage
b) the flap, lid, plug, etc.
7. Music a device in certain brass instruments, as the trumpet, that opens (or closes) an auxiliary to the main tube, lengthening (or shortening) the air column and lowering (or raising) the pitch
8. Zool.
a) each separate part making up the shell of a mollusk, barnacle, etc.
b) any of the parts forming the sheath of an ovipositor in certain insects
vt., vi.
valved, valving
1. to fit with or make use of a valve or valves
2. to regulate the flow of (a fluid) by means of a valve or valves
valveless
adj.

English World dictionary. . 2014.

Look at other dictionaries:

  • Valve — Valve, n. [L. valva the leaf, fold, or valve of a door: cf. F. valve.] [1913 Webster] 1. A door; especially, one of a pair of folding doors, or one of the leaves of such a door. [1913 Webster] Swift through the valves the visionary fair Repassed …   The Collaborative International Dictionary of English

  • ValVe — Unternehmensform Private Corporation Gründung 1996 Untern …   Deutsch Wikipedia

  • valve — [ valv ] n. f. • 1752; « battant de porte » 1560; sens du lat. valva I ♦ 1 ♦ Chacune des deux parties de la coquille (dite bivalve) de certains mollusques et crustacés. « La valve rainurée d une coquille de Saint Jacques » (Proust). ♢ (1771) Bot …   Encyclopédie Universelle

  • valvé — valve [ valv ] n. f. • 1752; « battant de porte » 1560; sens du lat. valva I ♦ 1 ♦ Chacune des deux parties de la coquille (dite bivalve) de certains mollusques et crustacés. « La valve rainurée d une coquille de Saint Jacques » (Proust). ♢… …   Encyclopédie Universelle

  • Valve — Corporation Тип час …   Википедия

  • VALVe — Corporation Valve Corporation Dates clés 1996 (création) Personnages clés …   Wikipédia en Français

  • Valve — Software es una empresa estadounidense desarrolladora de software en el campo de los videojuegos. Se hizo mundialmente famosa por su primer juego, Half Life y por una modificación de este juego, Counter Strike. Las oficinas centrales de Valve… …   Enciclopedia Universal

  • valve — [vælv] n [Date: 1400 1500; : Latin; Origin: valva part of a door ] 1.) a part of a tube or pipe that opens and shuts like a door to control the flow of liquid, gas, air etc passing through it ▪ heart valves ↑mouthpiece, ↑valve 2.) the part on a… …   Dictionary of contemporary English

  • Valve — [vælv] der; [s], s <aus gleichbed. engl. valve, dies aus lat. valvae (Plur.) »die Türflügel, (Flügel)tür«> Sperrwechsel für Linien der gleichen Figur (Thema im Kunstschach); vgl. auch ↑Bivalve …   Das große Fremdwörterbuch

  • valve — (n.) late 14c., one of the halves of a folding door, from L. valva section of a folding or revolving door, lit. that which turns, related to volvere to roll (see VULVA (Cf. vulva)). Sense extended 1610s to membranous fold regulating flow of… …   Etymology dictionary


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