phosphagen

American  

[fos-fuh-juhn, -jen] / ˈfɒs fə dʒən, -ˌdʒɛn /

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.

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Etymology

Origin of phosphagen

First recorded in 1925–30; phospha(te) + -gen