CO2(redirected from CO2 pistol)
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|Noun||1.||CO2 - a heavy odorless colorless gas formed during respiration and by the decomposition of organic substances; absorbed from the air by plants in photosynthesis|
blackdamp, chokedamp - the atmosphere in a mine following an explosion; high in carbon dioxide and incapable of supporting life
dioxide - an oxide containing two atoms of oxygen in the molecule