barium sulphate ba·rium·sulp·hate uncommon noun 1. a white insoluble radiopaque powder used as a pigment Synonymsbarium sulphatebarium sulfateblanc fixe 2. a white or colorless mineral (BaSO4); the main source of barium Synonymsheavy sparbaritebarytesbarium sulphate Related words Broader terms mineralsulfate Part of barium WordNet 2.1 (Princeton University). WordNet 2.1 Copyright Princeton University. All rights reserved.
