| 释义 |
plagiostome, n. (a.)|ˈpleɪdʒɪəʊstəʊm|
[a. F. plagiostome, f. plagio- + Gr. στόµα mouth.]
A member of the Plagiostomi, cartilaginous fishes, including the sharks and rays, which have the mouth placed transversely beneath the snout.
1842Brande Dict. Sc. etc., Plagiostomes, a tribe of Cartilaginous fishes. 1859Owen in Encycl. Brit. (ed. 8) XVII. 117/2 Affinities with the Cestracion amongst existing Plagiostomes. 1860Couch Brit. Fishes I. 5 [The Sharks and] their kindred chondropterygians or plagiostomes—the Rays. 1881Günther in Encycl. Brit. XII. 667/1 No detached undoubted tooth of a Plagiostome..has been discovered in the Ludlow deposits.
b. attrib. or adj. Plagiostomous.
1835R. Willis in Todd's Cycl. Anat. I. 115/1 The cartilaginous plagiostome fishes.
So plagioˈstomatous (rare), plagiˈostomous adjs., of or pertaining to the plagiostomes; having the mouth situated transversely beneath the snout.
1858Mayne Expos. Lex., Plagiostomus,..plagiostomous. 1859Owen in Encycl. Brit. (ed. 8) XVII. 116/1 A genus of plagiostomous cartilaginous fishes called Onchus. 1881Seeley in Cassell's Nat. Hist. V. 38 The Rays form the second division of the Plagiostomous fishes. 1890Cent. Dict., Plagiostomatous. |