1. A hard compact kind of calcite
   - alabaster, oriental alabaster, onyx marble

Type of: calcite

Encyclopedia: Mexican onyx

• horizontal tail
• horizontality
• horizontally
• hormesis
• hormogonium
• hormonal
• hormone
• hormone-replacement therapy
• horn
• horn button
• horn fly
• horn in
• Horn of Africa
• horn of plenty
• horn poppy
• horn-rimmed
• horn-shaped
• hornbeam
• hornbill
• hornblende
• hornbook
• Horne
• horned
• horned asp
• horned chameleon