ctenidˈium /ten-/ noun (pl ctenidˈia /-i-ə/)

A comb-like respiratory gill of molluscs

cteniform /tēnˈ or tenˈ/ or ctenˈoid adjective

Comb-shaped

ctenophˈoran noun

A member of the Ctenophˈora, a class of coelenterates which are transparent, free-swimming marine organisms resembling jellyfishes, and which move by means of meridionally-placed comb-like plates (also adjective)

ctenˈophore noun

Any member of the Ctenophora