valve defined in 1951 yearvalve - valve;
valve - (Bot.). (1) One of several parts into which capsule separates after dehiscence by longitudinal splitting. (2) applied also to each half of wall of diatom cell (frustule). (Zool.). (Heart) Flap or pocket of heart wall at entry and exit of each chamber of vertebrate heart, preventing back-flow. E.g. mitral valve, tricuspid valve. (Venous) Pocket-like flap within a vein, preventing back-flow, in birds and mammals. Similar structures occur in lymph vessels.
near valve in Knolik
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