|xanthine (ˈzænθiːn, -θaɪn)|
|1.||a crystalline compound related in structure to uric acid and found in urine, blood, certain plants, and certain animal tissues. Formula: C5H4N4O2|
|2.||any substituted derivative of xanthine, esp one of the three pharmacologically active methylated xanthines, caffeine, theophylline, or theobromine, which act as stimulants and diuretics|
xanthine xan·thine (zān'thēn', -thĭn)
A yellowish-white crystalline purine base that is a precursor of uric acid and is found in blood, urine, and muscle tissue.
Any of several derivatives of this compound.
|xanthine (zān'thēn', -thĭn) Pronunciation Key