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

Type of: mineral

Encyclopedia: Heavy spar

• Afrikaner
• AFRL
• Afro hairdo
• Afro-
• Afro-American
• Afro-Asian
• Afro-Asiatic
• Afro-Caribbean
• Afro-wig
• Afroasiatic language
• Afrocarpus
• Afrocarpus falcata
• afropavo
• acorn squash
• acorn tube
• acorn-shaped
• Acorus
• Acorus calamus
• acousma
• acoustic
• acoustic aphasia
• acoustic buoy
• acoustic delay line
• acoustic device
• acoustic gramophone