phosphagen

[fos-fuh-juh n, -jen]
noun Biochemistry.
  1. a high-energy phosphoric ester that serves as a reservoir of phosphate-bond energy, as phosphocreatine in vertebrates and phosphoarginine in invertebrates.

Origin of phosphagen

First recorded in 1925–30; phospha(te) + -gen
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018