a white, crystalline, bitter-tasting powder, CHNOS, used to reduce thyroid activity, and in treating angina pectoris
Origin:
thio- + uracil
See thiouracil in American Heritage Dictionary 4
noun
A white crystalline compound, C4H4N2OS, that interferes with the synthesis of thyroxine, used to reduce the action of the thyroid gland, especially in the treatment of hyperthyroidism.