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Pronunciation varies by accent · noun
(medicine) Any of a class of macrocyclic lactones, produced by Streptomyces bacteria, that are used medically to kill parasites.
Use avermectin when its meaning, tone and grammar fit the full sentence. A synonym is not always a direct replacement.
Avermectin means (medicine) Any of a class of macrocyclic lactones, produced by Streptomyces bacteria, that are used medically to kill parasites.
The closest synonym depends on the sentence and intended sense.
The opposite depends on the specific sense.
Use avermectin where its definition matches the intended context.
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