: a widely distributed genus (the type of the family Sphaeriidae) of small viviparous freshwater bivalve mollusks that have a thin light-colored shell and the siphons separate see fingernail clam

Word History


New Latin, from Greek sphairion, diminutive of sphaira ball, sphere

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Dictionary Entries Near Sphaerium

Cite this Entry

“Sphaerium.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/Sphaerium. Accessed 24 May. 2024.

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