“+ noun
( -s )
Etymology: New Latin Choanoflagellata
: any of numerous small solitary or colonial aquatic flagellates constituting three families (Phalansteriidae, Codosigidae, and Bicosoecidae) of the order Protomonadina and distinguished from all other flagellates by possession of a contractile protoplasmic collar about the single anterior flagellum — compare choanocyte