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单词 dertrum
释义

WordReference Random House Unabridged Dictionary of American English © 2024
der•trum  (dûrtrəm),USA pronunciation n., pl. -tra (-trə).USA pronunciation [Ornith.]
  1. Birdsthe extremity of the maxilla of a bird's bill, esp. when hooked or differentiated from the rest of the bill, as in pigeons and plovers.
  • Greek dértron membrane, derivative of dérein to skin; compare dérma derma1
  • Neo-Latin
  • 1885–90

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