[mass noun](Biochemistry)a compound formed in protein metabolism and present in much living tissue. It is involved in the supply of energy for muscular contraction (生化)肌酸
A guanidine derivative, usually present as a phosphate; chem. formula: C4H9N3O2 胍的衍生物,通常以磷酸盐(或酯)形式出现;化学分子式:C4H9N3O2
语源
mid 19th cent.: formed irregularly from Greek kreas 'meat' + -ine