Crassostrea
noun
Cras·sos·trea
krəˈsästrēə
: 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
Word History
Etymology
New Latin, from Latin crassus thick, fat + ostrea oyster