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/mɪˈθʌɪəniːn/ · noun
(biochemistry, organic chemistry) A sulphur-containing amino acid, C₅H₁₁NO₂S, in L- and D-forms..
Use methionine when its meaning, tone and grammar fit the full sentence. A synonym is not always a direct replacement.
Methionine means (biochemistry, organic chemistry) A sulphur-containing amino acid, C₅H₁₁NO₂S, in L- and D-forms..
The closest synonym depends on the sentence and intended sense.
The opposite depends on the specific sense.
Use methionine where its definition matches the intended context.
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