Webster dictionary was developed by Noah Webster in the beginning of 19th century. On this website, you can find definition for valve from the 1913 edition of Webster's Revised Unabridged Dictionary. Define valve using one of the most comprehensive free online dictionaries on the web.

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valve
Part of Speech: noun
Results: 7
1. A door; especially, one of a pair of folding doors, or one of the leaves of such a door.
4. One of the pieces into which a capsule naturally separates when it bursts.
5. One of the two similar portions of the shell of a diatom.
6. A small portion of certain anthers, which opens like a trapdoor to allow the pollen to escape, as in the barberry.
7. One of the pieces or divisions of bivalve or multivalve shells.
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