The Collaborative International Dictionary
Bivalved
Bivalved \Bi"valved\, a. Having two valves, as the oyster and some seed pods; bivalve.
Wiktionary
bivalved
a. Having two valves.
WordNet
Usage examples of "bivalved".
The seed, reniform in shape, is bivalved, and constitutes about two-thirds of the bulk of the entire plum, and the inner kernel two-thirds the bulk of the seed.