(1):
(a.) Meeting at the edges without overlapping; - said of the sepals or the petals of flowers in aestivation, and of leaves in vernation.
(2):
(a.) Resembling, or serving as, a valve; consisting of, or opening by, a valve or valves; valvular.
(3):
(a.) Opening as if by doors or valves, as most kinds of capsules and some anthers.
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