Definitions for CO2

This page provides all possible meanings and translations of the word CO2

Princeton's WordNet

  1. carbon dioxide, CO2, carbonic acid gas(noun)

    a heavy odorless colorless gas formed during respiration and by the decomposition of organic substances; absorbed from the air by plants in photosynthesis


  1. CO2(n.)

    the chemical formula for carbon dioxide, a heavy odorless gas (CO2) formed during respiration and by the combustion or decomposition of organic substances; it is absorbed from the air by plants in photosynthesis. The formula itself, pronounced out, is often used instead of the full name, especially with reference to fire extinguishers using this gas for fire suppression; as, a CO2 extinguisher.

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