Stibio- is a prefix that normally means containing antimony, a silvery-white metalloid used widely in industrial applications, such as fire resistance and medical treatments like antimony potassium tartrate. There are several synonyms for stibio-, including antimonic, antimonial, and stibiated. Antimonic is used to describe any compound or substance that contains antimony in the pentavalent state, while antimonial refers to the same but in the trivalent state. A stibiated compound means that it contains combined antimony trioxide. These synonyms are useful when talking about antimony, its properties, and its uses in different fields.