an essential amino acid, CHSCHCHCH(NH)COOH, that contains sulfur, obtained from various proteins and used as a food supplement and in medicine
Origin of methionineme(thyl) + thion(ic) + -ine
A sulfur-containing essential amino acid, C5H11NO2S, obtained from various proteins or prepared synthetically and used as a dietary supplement and in pharmaceuticals.
Origin of methionineme(th)– + thion– + –ine2.
(countable and uncountable, plural methionines)
From me(thyl) + thio- + (euphonic) -n- +"Ž -ine.