Definition of choanoflagellate
: 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
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Origin and Etymology of choanoflagellate
New Latin Choanoflagellata
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