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Pronunciation varies by accent · noun
(biology) one of the second set of down feathers (in those birds that have two sets).
Use mesoptile when its meaning, tone and grammar fit the full sentence. A synonym is not always a direct replacement.
Mesoptile means (biology) one of the second set of down feathers (in those birds that have two sets).
The closest synonym depends on the sentence and intended sense.
The opposite depends on the specific sense.
Use mesoptile where its definition matches the intended context.
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