1. A common nonmetallic element that is normally a colorless odorless tasteless inert diatomic gas;
    Constitutes 78 percent of the atmosphere by volume;
    A constituent of all living tissues (synset 114671413)
  2. The cardinal compass point that is at 0 or 360 degrees (synset 113853375)
  3. A unit of force equal to the force that imparts an acceleration of 1 m/sec/sec to a mass of 1 kilogram;
    Equal to 100,000 dynes (synset 113669285)
  4. (of a solution) concentration expressed in gram equivalents of solute per liter (synset 113602112)
  5. The 14th letter of the Roman alphabet (synset 106845622)

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