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apterium

[ ap-teer-ee-uhm ]

noun

, Ornithology.
, plural ap·te·ri·a [ap-, teer, -ee-, uh].
  1. one of the featherless portions of the skin of a bird.


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Other Words From

  • ap·teri·al adjective
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Word History and Origins

Origin of apterium1

From New Latin, dating back to 1865–70; a- 6, pter-, -ium
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Example Sentences

But, the male loses most of the down feathers of the ventral apterium.

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apteralapterous