• Webster's Revised Unabridged Dictionary
    • Valvate (Bot) Meeting at the edges without overlapping; -- said of the sepals or the petals of flowers in æstivation, and of leaves in vernation.
    • Valvate (Bot) Opening as if by doors or valves, as most kinds of capsules and some anthers.
    • Valvate Resembling, or serving as, a valve; consisting of, or opening by, a valve or valves; valvular.
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Century Dictionary and Cyclopedia
    • valvate In anatomy and zoology: Like a valve in form or function; resembling or serving for a valve; forming a valve; valvular; valviform: as, a valvate fold of membrane, Having a valve; provided with valves; valviferous; valvated: as, valvate vessels; a valvate orifice.
    • valvate In botany, united by the margins only, and opening as if by doors or valves, as the capsules of regularly dehiscent fruits, the anthers of certain Ericaceæ, and the parts of a perianth which in the bud meet without overlapping: said also of an estivation thus characterized.
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Chambers's Twentieth Century Dictionary
    • Valvate having or resembling a valve or valves:
    • Valvate (bot.) meeting at the edges without overlapping, as the petals of flowers
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Webster's Revised Unabridged Dictionary
L. valvatus, having folding doors
Chambers's Twentieth Century Dictionary
Fr.,—L. valva, a folding-door.


In literature:

I may remark, that the aestivation of Kydia is scarcely valvate.
"Journals of Travels in Assam, Burma, Bhootan, Afghanistan and TheNeighbouring Countries" by William Griffith
Flowers not in umbels; petals (valvate, or none) and stamens 4 or 5.
"The Manual of the Botany of the Northern United States" by Asa Gray