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Pronunciation varies by accent · noun
(pharmacology) A promethazine derivative used as an antihistamine..
Use hydroxyethylpromethazine when its meaning, tone and grammar fit the full sentence. A synonym is not always a direct replacement.
Hydroxyethylpromethazine means (pharmacology) A promethazine derivative used as an antihistamine..
The closest synonym depends on the sentence and intended sense.
The opposite depends on the specific sense.
Use hydroxyethylpromethazine where its definition matches the intended context.
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