actinostome Zool.
(ækˈtɪnəstəʊm)
[f. actino- + στόµα mouth.]
L. Agassiz's name for the mouth of radiated animals, considered by him as essentially different from that of Vertebrates.
| 1857 L. Agassiz Contrib. Nat. Hist. N. Amer. IV. 376. 1880 Bell in Zool. Jrnl. Lin. Soc. XV. No. 82, 127 The actinostome has been pushed forwards and to the left. |