Hypoxanthin
Pronunciation : Hy`po*xan"thin
Part of Speech : n.
Etymology : [Pref. hypo- + xanthin.] (Physiol. Chem.)
Definition : Defn: A crystalline, nitrogenous substance, closely related to xanthin and uric acid, widely distributed through the animal body, but especially in muscle tissue; -- called also sarcin, sarkin.
Source : Webster's Unabridged Dictionary, 1913