“metastoma”的英文意思

单词

metastoma

释义

‖ metastoma Zool.|mɛˈtæstəmə|
Also anglicized metastome |ˈmɛtəstəʊm|.
[mod.L., f. Gr. µετα- meta- + στόµα mouth.]
1. The labium or lower lip of crustaceans.
1859Huxley in Brit. Org. Rem., 1st Monograph 16 The Metastoma [in Pterygotus]..is an oval plate with margins much thinner than the centre.1876Page Adv. Text-bk. Geol. xii. 210 A broad heart-shaped metastome or mouthpiece.
2. Haeckel's term (1872) for the secondary (i.e. permanent) mouth in the vertebrata.
1879tr. Haeckel's Evol. Man II. 469.

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