valve

Definitions of valve in various dictionaries:

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

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

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

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

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

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

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.

The movable control element of such a device.

A device in a brass wind instrument that permits change in pitch by a rapid varying of the air column in a tube.

Biology.

One of the paired, hinged shells of certain mollusks and of brachiopods.

One of the two silicified halves of the cell wall of a diatom.

The entire, one-piece shell of a snail and certain other mollusks.

Botany.

One of the sections into which the wall of a seedpod or other dehiscent fruit splits.

A lidlike covering of an anther.

An electron tube or a vacuum tube.

Archaic.

To provide with a valve.

To control by means of a valve.

verb - to provide with a valve (a device for controlling the flow of a liquid or gas)

VALVE - A valve is a device that regulates, directs or controls the flow of a fluid (gases, liquids, fluidized solids, or slurries) by opening, closing, or p...