Also called calcined baryta, barium oxide, barium monoxide, barium protoxide. a white or yellowish-white poisonous solid, BaO, highly reactive with water: used chiefly as a dehydrating agent and in the manufacture of glass.
Also called caustic baryta, barium hydroxide, barium hydrate. the hydroxide, hydrated form of this compound, Ba(OH) 2 ⋅8H 2 O, used chiefly in the industrial preparation of beet sugar and for refining animal and vegetable oils.
1800-10; < New Latin, equivalent to bary- (< Greekbarýs heavy) + -ta (< Greek -(i)tēs-ite1)