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dertrum

[ dur-truhm ]

noun

, Ornithology.
, plural der·tra [dur, -tr, uh].
  1. the extremity of the maxilla of a bird's bill, especially when hooked or differentiated from the rest of the bill, as in pigeons and plovers.


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Word History and Origins

Origin of dertrum1

1885–90; < New Latin < Greek dértron membrane, derivative of dérein to skin; compare dérma derma 1

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