Peridiniidae

plural noun

Peri·​di·​ni·​idae

ˌperədə̇ˈnīəˌdē

: a family of marine and freshwater dinoflagellates that have a thick test composed of plates and well-marked flagellar grooves compare ceratium , gonyaulax , peridiniaceae

Word History

Etymology

borrowed from New Latin, from Peridinium peridinium + -idae -idae

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