calcite /kalˈsīt/

A mineral, calcium carbonate crystallized in the hexagonal system, the main constituent of limestone and many marbles (also calcspar /kalkˈspär/)

calcitic /-sitˈik/ adjective

• under the weather
• under the wire
• underthings
• underthirst
• underthirsts
• underthrust
• underthrusts
• undertime
• undertimed
• undertimes
• undertint
• undertints
• undertone
• undertoned
• undertones
• undertook
• under tow
• undertow
• under tow of vessels
• undertows
• undertrick
• under-tunic
• under-tunics
• under-turnkey
• under-turnkeys