| 单词 | Agnatha |
| 释义 | Agnatha /ag"neuh theuh/, n. the class of vertebrates comprising the lampreys, hagfishes, and several extinct forms, having no jaws or paired appendages. [1875-80; < NL, equiv. to Gk a- A-6 + -gnatha, neut. pl. of -gnathos -GNATHOUS] |
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