Dioxide

Pronunciation: /daɪˈɑːkˌsaɪd/

Dioxide (noun)

  1. A chemical compound that contains two oxygen atoms in each molecule, often written with a formula ending in O2.
  2. A name used for carbon dioxide, a gas in air that plants use and people breathe out.

Examples

  • Carbon dioxide contains two oxygen atoms.
  • The molecule has two oxygen atoms in its structure.