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单词 primordium
释义

WordReference Random House Unabridged Dictionary of American English © 2024
pri•mor•di•um  (prī môrdē əm),USA pronunciation n., pl. -di•a (-dē ə).USA pronunciation [Embryol.]
  1. Developmental Biologythe first recognizable, histologically differentiated stage in the development of an organ.
  • Latin prīmōrdium, in plural: beginnings, elementary stage, equivalent. to prīm(us) first (see prime) + ōrd(īrī) to begin + -ium -ium; compare exordium
  • 1665–75

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