/fos'foh kree"euh teen', -tin/ , n. Biochem.
a compound, C 4 H 10 O 5 N 3 P, found chiefly in muscle, formed by the enzymatic interaction of an organic phosphate and creatine, the breakdown of which provides energy for muscle contraction. Also called creatine phosphate .
[ 1925-30; PHOSPHO- + CREATINE ]