Nitrous oxide

What is Nitrous oxide?

Nitrous oxide definition and meaning on Dictionary terms:
noun Chemistry, Pharmacology.

a colorless, sweet-smelling, sweet-tasting, nonflammable, slightly water-soluble gas, N2O, that sometimes produces a feeling of exhilaration when inhaled: used chiefly as an anesthetic in dentistry and surgery, in the manufacture of chemicals, and as an aerosol.