1. A white or colourless mineral (BaSO4); the main source of barium
   - barite, barytes, barium sulphate

Type of: mineral

Encyclopedia: Heavy spar

• allophone
• allophonic
• allopurinol
• allosaur
• allosaurus
• allot
• bowl-shaped
• bowlder
• bowleg
• bowlegged
• bowler
• bowler hat
• bowlful
• bowline
• bowline knot
• bowling
• bowling alley
• bowling ball
• bowling equipment
• bowling green
• bowling league
• bowling pin
• bowling score
• bowling shoe
• bowls