methionine

me·thi·o·nine   (mə-thī'ə-nēn')    n.  A sulfur-containing essential amino acid, C5H11NO2S, obtained from various proteins or prepared synthetically and used as a dietary supplement and in pharmaceuticals. [me(th)- + thion- + -ine2.]

Main Entry: me·thi·o·nine
Pronunciation: m&-'thI-&-"nEn
Function: noun
: a crystalline sulfur-containing essential amino acidC₅H₁₁NO₂S that occurs in the L-form as a constituent of many proteins (as casein and egg albumin), that is important especially as a source ofsulfur for the biosynthesis of cysteine and as a source of methyl groups for transmethylation reactions (as in the biosynthesis of choline, creatine, and adrenaline), and that is used as a dietarysupplement for human beings and their domestic mammals and poultry and in the treatment of fatty infiltration of the liver —abbreviation Met;—see MEONINE

methionine me·thi·o·nine (mə-thī'ə-nēn')
n.
Abbr. Met
A sulfur-containing essential amino acid obtained from various proteins or prepared synthetically and used as a dietary supplement and in pharmaceuticals.