Muscle sugar

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a sweet white crystalline substance isomeric with, and formerly regarded to, the glucoses. It is found in the tissue of muscle, the heart, liver, etc. Called also heart sugar. See Inosite.

See also: Sugar

Webster's Revised Unabridged Dictionary, published 1913 by G. & C. Merriam Co.
References in periodicals archive ?
Then eat a more carbohydrate-rich meal, such as pasta, to replenish your muscle sugar storage after performing.