1. A nonmetallic bivalent element that is normally a colourless odourless tasteless nonflammable diatomic gas; constitutes 21 percent of the atmosphere by volume; the most abundant element in the earth's crust
   - O, atomic number 8

Derived forms: oxygens

See also: oxygenate, oxygenize

Type of: chemical element, element, gas

Part of: air, H2O, ozone, water

Encyclopedia: Oxygen Oxygen, Kingston YFC Oxygen, kingston yfc

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