Webster's Revised Unabridged Dictionary · 1913

choanocyte

choanocyte (kō"ȧ*no*sīt`; kō*an"o*sīt`) , noun

[Greek choa`nh funnel + -cyte.]

any of the flagellated cells in sponges having a collar of cytoplasm around base of the flagellum; they maintain a flow of water through the body.