单词	Ancylidae
释义	Ancylidae plural noun An·​cyl·​i·​dae aŋˈkiləˌdē, anˈsi- : a cosmopolitan family of small thin-shelled conical pulmonate snails related to the Planorbidae compare freshwater limpet Word History Etymology New Latin, from Ancylus, type genus + -idae First Known Use 1865, in the meaning defined above
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