Definify.com
Webster 1913 Edition
Valve
Valve
,Noun.
[L.
valva
the leaf, fold, or valve of a door: cf. F. valve
.] 1.
A door; especially, one of a pair of folding doors, or one of the leaves of such a door.
Swift through the
Repassed.
valves
the visionary fairRepassed.
Pope.
Heavily closed, . . . the
valves
of the barn doors. Longfellow.
2.
A lid, plug, or cover, applied to an aperture so that by its movement, as by swinging, lifting and falling, sliding, turning, or the like, it will open or close the aperture to permit or prevent passage, as of a fluid.
☞ A valve may act automatically so as to be opened by the effort of a fluid to pass in one direction, and closed by the effort to pass in the other direction, as a clack valve; or it may be opened or closed by hand or by mechanism, as a screw valve, or a slide valve.
3.
(Anat.)
One or more membranous partitions, flaps, or folds, which permit the passage of the contents of a vessel or cavity in one direction, but stop or retard the flow in the opposite direction;
as, the ileocolic, mitral, and semilunar
. valves
4.
(Bot.)
(a)
One of the pieces into which a capsule naturally separates when it bursts.
(b)
One of the two similar portions of the shell of a diatom.
(c)
A small portion of certain anthers, which opens like a trapdoor to allow the pollen to escape, as in the barberry.
5.
(Zool.)
One of the pieces or divisions of bivalve or multivalve shells.
Air valve
, Ball valve
, Check valve
Double-beat valve
, a kind of balance valve usually consisting of a movable, open-ended, turban-shaped shell provided with two faces of nearly equal diameters, one above another, which rest upon two corresponding seats when the valve is closed.
– Equilibrium valve
. (a)
A balance valve. See under
Balance
. (b)
A valve for permitting air, steam, water, etc., to pass into or out of a chamber so as to establish or maintain equal pressure within and without.
– Valve chest
(Mach.)
, a chamber in which a valve works; especially
– (Steam Engine)
, the steam chest; – called in England valve box
, and valve casing
. See Steam chest
, under Steam
. Valve face
(Mach.)
, that part of the surface of a valve which comes in contact with the
– valve seat
. Valve gear
, or
Valve motion
(Steam Engine)
, the system of parts by which motion is given to the valve or valves for the distribution of steam in the cylinder. For an illustration of one form of
– valve gear
, see Link motion
. Valve seat
. (Mach.)
(a)
The fixed surface on which a valve rests or against which it presses.
(b)
A part or piece on which such a surface is formed.
– Valve stem
(Mach.)
, a rod attached to a valve, for moving it.
– Valve yoke
(Mach.)
, a strap embracing a slide valve and connecting it to the valve stem.
Webster 1828 Edition
Valve
VALVE
,Noun.
1.
A folding door.Swift through the valves the visionary fair repass'd.
2.
A lid or cover so formed as to open a communication in one direction, and close it in the other. Thus the valve of a common pump opens upwards to admit the water, and closes downwards to prevent its return.3.
In anatomy, a membranous partition within the cavity of a vessel, which opens to allow the passage of a fluid in one direction, and shuts to prevent its regurgitation.4.
In botany, the outer coat, shell or covering of a capsule or other pericarp, or rather one of the pieces which compose it; also, one of the leaflets composing the calyx and corol in grasses.5.
One of the pieces or divisions in bivalve and multivalve shells.Definition 2024
valve
valve
English
Noun
valve (plural valves)
- A device that controls the flow of a gas or fluid through a pipe.
- A device that admits fuel and air into the cylinder of an internal combustion engine, or one that allows combustion gases to exit.
- (anatomy) One or more membranous partitions, flaps, or folds, which permit the passage of the contents of a vessel or cavity in one direction, but stop or control the flow in the opposite direction
- the ileocolic, mitral, and semilunar valves
- (Britain) A vacuum tube.
- (botany) One of the pieces into which certain fruits naturally separate when they dehisce.
- (botany) A small portion of certain anthers, which opens like a trapdoor to allow the pollen to escape, such as in the barberry.
- (biology) One of the pieces or divisions of bivalve or multivalve shells.
- (biology) One of the two similar portions of the shell of a diatom.
Derived terms
|
|
Translations
device that controls flow of gas or fluid
|
|
device in an internal combustion engine
in anatomy
|
vacuum tube — see vacuum tube
Verb
valve (third-person singular simple present valves, present participle valving, simple past and past participle valved)
- (transitive) To control (flow) by means of a valve.
Estonian
Noun
valve (genitive valve, partitive valvet)
Declension
This noun needs an inflection-table template.
Finnish
Noun
valve
- The state of being awake.
Declension
| Inflection of valve (Kotus type 48/hame, no gradation) | |||
|---|---|---|---|
| nominative | valve | valveet | |
| genitive | valveen | valveiden valveitten |
|
| partitive | valvetta | valveita | |
| illative | valveeseen | valveisiin valveihin |
|
| singular | plural | ||
| nominative | valve | valveet | |
| accusative | nom. | valve | valveet |
| gen. | valveen | ||
| genitive | valveen | valveiden valveitten |
|
| partitive | valvetta | valveita | |
| inessive | valveessa | valveissa | |
| elative | valveesta | valveista | |
| illative | valveeseen | valveisiin valveihin |
|
| adessive | valveella | valveilla | |
| ablative | valveelta | valveilta | |
| allative | valveelle | valveille | |
| essive | valveena | valveina | |
| translative | valveeksi | valveiksi | |
| instructive | — | valvein | |
| abessive | valveetta | valveitta | |
| comitative | — | valveineen | |
Antonyms
Derived terms
- olla valveilla
French
Etymology
Pronunciation
- IPA(key): /valv/
Noun
valve f (plural valves)
Derived terms
- valve cardiaque