the GNU version of the Collaborative International Dictionary of English
n. Barium sulphate, generally called heavy spar or barite. See barite.
The Century Dictionary and Cyclopedia
n. Baryta.
n. The native sulphate of barium, BaSO4, a common name for the mineral barite or heavy-spar. It is sometimes mined and ground in a mill, and used to adulterate white lead, to weight paper, etc. See barite.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
n. a white or colorless mineral (BaSO4); the main source of barium
Word Usage
"The mineral barite is a heavy white sulphate of barium, frequently called "barytes" or "heavy spar.""