Literally meaning: “phosporylated creatine”
Origin: Anc Greek
φωσφο-/phospho(=phospho-, prefix denoting a chemical bound with phosporous group) > φως/phos=light
+κρεατίνη/creatine(=creatine, an organic acid that helps to supply energy to all cells in the body, primarily in muscle) > κρέας/creas(=flesh, meat)
Phosphocreatine is a phosphorylated form the organic acid of creatine that is used as energy storage compound in cells mainly for muscle contraction.