\Valv"ate\, a. [L. valvatus having folding doors.]
1. Resembling, or serving as, a valve; consisting of, or
   opening by, a valve or valves; valvular.
2. (Bot.)
   (a) Meeting at the edges without overlapping; -- said of
       the sepals or the petals of flowers in [ae]stivation,
       and of leaves in vernation.
   (b) Opening as if by doors or valves, as most kinds of
       capsules and some anthers.