# phosphagen

> English word · Noun

## Definitions
1. Any of a class of energy storage compounds, chiefly found in muscular tissue in animals, allowing a high-energy phosphate pool to be maintained in a concentration range, which, if it all were ATP, would create problems due to the ATP consuming reactions in these tissues.

## Etymology
From phosphate + -gen.

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/word/phosphagen