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单词 preformationary
释义

WordReference Random House Unabridged Dictionary of American English © 2024
pre•for•ma•tion  (prē′fôr māshən),USA pronunciation n. 
  1. previous formation.
  2. Biology(formerly) the theory that the individual, with all its parts, preexists in the germ cell and grows from microscopic to normal proportions during embryogenesis (opposed to epigenesis).
  • pre- + formation 1725–35
pre′for•mation•ar•y, adj. 

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