- one of the two or more separable pieces composing certain shells.
- either half of the silicified shell of a diatom.
- one of the segments into which a capsule dehisces.
- a flap or lidlike part of certain anthers.
verb (used with object), valved, valv·ing.
- valve gear,
- valve lifter,
- valve spring,
- valve stem,
- valve trombone
Origin of valve
Examples from the Web for valving
The ship has big bills for valving and piping and repairing.Wide Courses|James Brendan Connolly
- any of the several parts that make up a dry dehiscent fruit, esp a capsule
- either of the two halves of a diatom cell wall
Word Origin for valve
late 14c., "one of the halves of a folding door," from Latin valva "section of a folding or revolving door," literally "that which turns," related to volvere "to roll" (see volvox). Sense extended 1610s to "membranous fold regulating flow of bodily fluids;" 1650s to "mechanical device that works like a valve;" and 1660s in zoology to "halves of a hinged shell."
- Any of various mechanical devices that control the flow of liquids, gases, or loose material through pipes or channels by blocking and uncovering openings.
- The movable part or element of such a device.