Ctenoidei :: Ctenoidei (n. pl.) A group of fishes, established by Agassiz, characterized by having scales with a pectinated margin, as in the perch. The group is now generally regarded as artificial..
Ctenophora :: Ctenophora (n. pl.) A class of Coelenterata, commonly ellipsoidal in shape, swimming by means of eight longitudinal rows of paddles. The separate paddles somewhat resemble combs..