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单词 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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更新时间:2024/12/23 0:52:28