adjective Also u·ni·valved, u·ni·val·vu·lar [yoo-nuh-val-vyuh-ler] /ˌyu nəˈvæl vyə lər/.
Examples from the Web for univalve
The ventral surface of an univalve spiral shell is that which faces the observer when the aperture is placed towards him.
A term applied to the spire of univalve shells, or to any other prominent portion.
A term applied to the aperture of a univalve shell, when it is spread out or widened into a flat surface, or digitations.
But the limpet is univalve, and has a smooth shell; and the mussel has a united shell.
A term applied to the prominences on the columellar lip of some univalve shells, particularly in the sub-family of Volutid.