Definition of Pleurotomaria
: a large genus of nearly extinct two-gilled gastropods (suborder Rhipidoglossa) usually having a trochiform nacreous shell with a broad sinus in the outer margin of the last whorl that extends back around the whorls as a raised band
pleurotomariidadjective or noun
pleurotomarioid\-ēˌȯid\ adjective or noun
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Origin and Etymology of pleurotomaria
New Latin, from pleur- + -toma + -aria
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