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apterium
[ ap-teer-ee-uhm ]
/ æpˈtɪər i əm /
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noun, plural ap·te·ri·a [ap-teer-ee-uh]. /æpˈtɪər i ə/. Ornithology.
one of the featherless portions of the skin of a bird.
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Compare pteryla.
OTHER WORDS FROM apterium
ap·te·ri·al, adjectiveWords nearby apterium
Ap star, Apsu, Apsyrtus, apt, apteral, apterium, apterous, apterygial, apterygote, apteryx, aptitude
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Based on the Random House Unabridged Dictionary, © Random House, Inc. 2022
How to use apterium in a sentence
But, the male loses most of the down feathers of the ventral apterium.
Natural History of the Bell Vireo, Vireo bellii Audubon|Jon C. Barlow