n. Any of several compounds of barium, especially barium sulphate and barium hydroxide.
the GNU version of the Collaborative International Dictionary of English
n. An oxide of barium (or barytum); a heavy earth with a specific gravity above 4.
The Century Dictionary and Cyclopedia
n. Barium oxid, BaO: also called heavy earth, because it is the heaviest of the earths, its specific gravity being 4.7.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
n. any of several compounds of barium
Word Usage
"The baryta is a heavy grayish porous substance prepared by carefully igniting the nitrate of barium; and of this each retort having the above dimensions holds about 125 lb."