plural noun
Flag·el·la·tae | \-lätˌē, -lātˌē\

Definition of Flagellatae 

in some classifications

: a class of flagellated unicellular organisms comprising the Chrysomonadina, Cryptomonadina, Euglenoidina, and closely related flagellate and algal organisms and being nearly equivalent in scope to Phytomastigina of other classifications

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History and Etymology for Flagellatae

New Latin, from flagellum + -atae (from Latin, feminine plural of -atus -ate)

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exaggeratedly or childishly emotional

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