Meaning of creatine kinase

cre'atine ki'nase

Pronunciation: [key]
— Biochem. Biochem.
  1. an enzyme that, during muscular activity, catalyzes the transfer of a phosphoryl group from phosphocreatine in muscle to produce ATP.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.