Cras·​sos·​trea | \ krəˈsästrēə\

Definition of Crassostrea

: a genus of bivalve mollusks comprising those oysters that discharge their reproductive products directly into the water and have no larval development in the gills of the parent, and now usually including the Virginia oyster — compare gryphaea sense 1, ostrea

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History and Etymology for Crassostrea

New Latin, from Latin crassus thick, fat + ostrea oyster

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