1. A transparent calcite found in Iceland and used in polarizing microscopes

Type of: calcite

Encyclopedia: Iceland spar

• hopper
• hopping mad
• hopple
• hops
• hopsack
• hopsacking
• hopscotch
• hora
• Horace
• Horace Greeley
• Horace Mann
• Horace Walpole
• horal
• horary
• Horatian ode
• Horatio Alger
• Horatio Herbert Kitchener
• Horatio Hornblower
• Horatio Nelson
• Horatio Walpole
• horde
• hordeolum
• Hordeum
• Hordeum jubatum
• Hordeum murinum