1. A heavy odourless colourless gas formed during respiration and by the decomposition of organic substances; absorbed from the air by plants in photosynthesis
   - carbon dioxide, carbonic acid gas

Type of: dioxide, greenhouse emission, greenhouse gas

Encyclopedia: CO2

• for keeps
• for love or money
• for one
• for sale
• for short
• for sure
• for that matter
• for the asking
• for the first time
• for the moment
• for the most part
• for the record
• for the time being
• forage
• forager
• foraging
• foram
• foramen
• foramen magnum
• foramen of Monro
• foraminifer
• Foraminifera
• foraminous
• forasmuch as
• foray