: a genus of large flattened tropical bivalve mollusks (order Filibranchia) with extremely thin nearly transparent shells that is related to Anomia but sometimes made the type of a separate family see windowpane oyster

Word History


New Latin, from Greek plak-, plax flat surface

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Dictionary Entries Near Placuna

Cite this Entry

“Placuna.” Dictionary, Merriam-Webster, Accessed 21 Jun. 2024.

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