valve

Definition of Valve in English :

see synonyms of valve

Noun

1. valve

a structure in a hollow organ (like the heart) with a flap to insure one-way flow of fluid through it

2. valve

device in a brass wind instrument for varying the length of the air column to alter the pitch of a tone

3. valve

control consisting of a mechanical device for controlling the flow of a fluid

4. valve

the entire one-piece shell of a snail and certain other molluscs

5. valve

one of the paired hinged shells of certain molluscs and of brachiopods

WordNet Lexical Database for English. Princeton University. 2010.

Valve

see synonyms of valve

noun

1.

any device that shuts off, starts, regulates, or controls the flow of a fluid

2. anatomy

a flaplike structure in a hollow organ, such as the heart, that controls the one-way passage of fluid through that organ

3. 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 (sense 2), triode (sense 1), tetrode, pentode

4. zoology

any of the separable pieces that make up the shell of a mollusc

5. 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

6. botany

a.

any of the several parts that make up a dry dehiscent fruit, esp a capsule

b.

either of the two halves of a diatom cell wall

7. archaic

a leaf of a double door or of a folding door

Valve

see synonyms of valve

noun

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. Anatomy

a membranous fold or structure which permits body fluids to flow in one direction only, or opens and closes a tube, chamber, etc.

4. Botany

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. British

electron tube

6. Mechanics

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. Zoology

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

verb transitive, verb intransitiveWord forms: valved or ˈvalving

9.

to fit with or make use of a valve or valves

10.

to regulate the flow of (a fluid) by means of a valve or valves

Valve

see synonyms of valve

n.

1.

a. Any of various devices that regulate the flow of gases, liquids, or loose materials through piping or through apertures by opening, closing, or obstructing ports or passageways.

b. The movable control element of such a device.

c. A device in a brass wind instrument that can be opened or closed to change the pitch by altering the length of the air column in the tube.

2. Anatomy A membranous structure in a hollow organ or passage, as in an artery or vein, that folds or closes to prevent the return flow of the body fluid passing through it.

3. Biology

a. A piece of shell covering or enclosing certain mollusks or other invertebrates, especially the single one of a univalve mollusk or one of the paired hinged ones of a bivalve mollusk or brachiopod.

b. One of the two siliceous halves of the cell wall of a diatom.

4. One of the pieces into which a plant part splits at maturity, especially a segment of a fruit capsule or of certain anthers.

5. Chiefly British An electron tube or a vacuum tube.

6. Archaic Either half of a double or folding door.

tr.v. valved, valv·ing, valves

1. To provide with a valve.

2. To control by means of a valve.

Valve

Noun

Valve

Valve

Valve

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