ethionine

noun
ethi·​o·​nine | \e-ˈthī-ə-ˌnēn \

Definition of ethionine 

: an amino acid C6H13NO2S that is the ethyl homologue of methionine and is biologically antagonistic to methionine

First Known Use of ethionine

1938, in the meaning defined above

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The first known use of ethionine was in 1938

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ethionine

noun
ethi·​o·​nine | \e-ˈthī-ə-ˌnēn \

Medical Definition of ethionine 

: an amino acid C6H13NO2S that is the ethyl homologue of methionine and is biologically antagonistic to methionine

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