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2025-08-02

“cyathozooid”的英英意思

单词 cyathozooid
释义 cyathozooid Zool.|saɪəθəʊˈzəʊɔɪd|
[f. Gr. κύαθο-ς cyathus + zooid.]
An abortive first stage of the embryo of certain compound ascidians, which becomes by gemmation the foundation of a colony.
1877Huxley Anat. Inv. Anim. x. 617 The result [of yelk-division] is the formation of an elongated flattened blastoderm which occupies one pole of the egg, and is converted into what I termed the cyathozooid, which is..a sort of rudimentary ascidian.1888Rolleston & Jackson Anim. Life 446 The germinal disc in Pyrosoma developes in the posterior region into a transitory Cyathozooid.
“cyathozooid”的英英意思

 

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