ˈvalˌvāt adjective
Etymology: New Latin valvatus, from Latin, having folding doors, from valva leaf of a folding door + -atus -ate — more at valve
: having valves or parts resembling a valve:
a. : meeting at the edges without overlapping
valvate sepals
valvate leaves
b. : opening as if by doors or valves
valvate capsules
valvate anthers