What does apterium mean?
Apterium means (ornithology) An area of bare (featherless) skin on a bird..
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Pronunciation varies by accent · noun
(ornithology) An area of bare (featherless) skin on a bird..
The two halves of the lower cervical tract are still separated by an apterium 4 mm. wide, as in the young bird, but contour feathers are now present on the chin and upper throat, so that they are united at their upper ends.
Use apterium when its meaning, tone and grammar fit the full sentence. A synonym is not always a direct replacement.
Apterium means (ornithology) An area of bare (featherless) skin on a bird..
The closest synonym depends on the sentence and intended sense.
The opposite depends on the specific sense.
The two halves of the lower cervical tract are still separated by an apterium 4 mm. wide, as in the young bird, but contour feathers are now present on the chin and upper throat, so that they are united at their upper ends.
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