1. Not damaging to the environment, or directed at preventing environmental damage
   - green, eco-friendly

Encyclopedia: Environmentally-friendly

• Colchicaceae
• colchicia
• colchicine
• Colchicum
• Colchicum autumnale
• Colchis
• cold
• cold boot
• cold call
• cold calling
• cold cash
• cold cathode
• cold cereal
• cold chisel
• cold comfort
• cold cuts
• cold duck
• cold feet
• cold fish
• cold frame
• cold front
• cold fusion
• cold gangrene
• cold medicine
• cold rubber