univalve
noun
- a mollusk having a one-piece shell, as a snail
- such a one-piece shell
adjective
- designating or having a one-piece shell
- having one valve only
See univalve in American Heritage Dictionary 4
(yo͞oˈnĭ-vălvˌ)
adjective- Having a shell consisting of a single valve or piece. Used of a mollusk.
- Composed of a single valve or piece. Used of a shell.
noun A univalve mollusk or shell.
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