taurine

tau·rine

noun \ˈtȯ-ˌrēn\

Definition of TAURINE

: a colorless crystalline acid C₂H₇NO₃S that is synthesized in the body from cysteine and methionine, is similar to amino acids but is not a component of proteins, and is involved in various physiological functions (as bile acid conjugation and cell membrane stabilization)