noun pl \lim-ˈnē-ə-ˌdē\

Definition of LYMNAEIDAE

: a family of thin-shelled air-breathing freshwater snails (suborder Basommatophora) that have an elongate ovoidal shell with a large opening and a simple lip and that include numerous species important as intermediate hosts of trematode worms—see fossaria, galba, lymnaea
lym·nae·id \-ˈnē-id\ adjective or noun

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