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Pisidium

noun
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Pi·​sid·​i·​um | \ -ēəm \

Definition of Pisidium

: a genus of nearly cosmopolitan minute freshwater bivalves (family Sphaeriidae) usually somewhat smaller than those of the genus Sphaerium and having the siphons united at their ends

History and Etymology for Pisidium

New Latin, diminutive of Latin pisum pea

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Dictionary Entries Near Pisidium

Pisidia

Pisidium

pisiform

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Cite this Entry

“Pisidium.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/Pisidium. Accessed 25 Sep. 2022.

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