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词汇 animal hemisphere
释义

Definition of animal hemisphere in English:

animal hemisphere

noun
Embryology
  • The upper region of an ovum or blastula, which is free of yolk or occupied by small, rapidly dividing cells with little yolk; contrasted with vegetal hemisphere.

Origin

Late 19th century; earliest use found in Haeckel's Evolution of Man.

Definition of animal hemisphere in US English:

animal hemisphere

noun
Embryology
  • The upper region of an ovum or blastula, which is free of yolk or occupied by small, rapidly dividing cells with little yolk; contrasted with vegetal hemisphere.

Origin

Late 19th century; earliest use found in Haeckel's Evolution of Man.

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