The building blocks of English

Affixes

choan(o)-

A funnel.

Greek khoanē, funnel.

A choanocyte (Greek kutos, vessel) is a type of cell which lines the internal chambers of sponges; the part of the sponge that contains them is the choanosome. A choana (plural choanae) is a funnel-like opening, especially used of the two openings between the back of the nose and the pharynx. The adjective is choanal.