Rhizodiniales

plural noun

Rhi·​zo·​din·​i·​a·​les

ˌrīzōˌdinēˈā(ˌ)lēz

: an order of colorless marine algae (class Dinophyceae) having the vegetative cells naked and amoeboid

Word History

Etymology

New Latin, probably from rhiz- + dini- (from Greek deinos terrible) + -ales

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