chat odontoid (ket odontoid)

and n. I. a. Resembling or having the characters of the Cha to don to idea. II. n. A member of the Cha to don to idea . [NL., Chœtodon ( t )+- oidea .] A sup erf am Cha to don to idea (keto-don-toi'de-ä), n. pl. ily of chætodont fishes. It contains several families, having peculiarly modified vertebræ and bas i occipital bone, vertically extended lamellar upper pharyngeal bones, and a much compre ed body with its integument encroaching upon the dorsal and anal fins. chætognath (kē'tog-nath), a . and n. I. a. Of or pertaining to the Chatognatha; chætognathous. II. n. A member of the Chatognatha. Chætognatha (ke-tog'na-thậ), n. pl. [NL., neut. pl. of chœtognathus: see chœtognathous.] A group of transparent animals consisting of the family Sagittidæ, the affinities of which are still undetermined. They resemble the nematoid worms and oligochæto us annelids in structure, while their mode of development is peculiar, presenting some points of resemblance to that of brachiopods and echinoderms. The group is now made a separate cla of the branch Vermes.