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Pronunciation varies by accent · noun
(biochemistry) An amino acid related to methionine by the replacement of its sulfur atom by one of selenium.
Use selenomethionine when its meaning, tone and grammar fit the full sentence. A synonym is not always a direct replacement.
Selenomethionine means (biochemistry) An amino acid related to methionine by the replacement of its sulfur atom by one of selenium.
The closest synonym depends on the sentence and intended sense.
The opposite depends on the specific sense.
Use selenomethionine where its definition matches the intended context.
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