tolbutamide: sulfonylurea; an oral antidiabetic drug (trade name Orinase) used in the treatment of adult-onset diabetes mellitus
hypoglycemic agent: any of various agents that decrease the level of glucose in the blood and are used in the treatment of diabetes mellitus
alloy: a mixture containing two or more metallic elements or metallic and nonmetallic elements usually fused together or dissolving into each other when molten