| 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. |
| nitrous oxide n. A colorless, sweet-tasting gas, N2O, used as a mild anesthetic in dentistry and surgery. |
nitrous oxide n.
A colorless sweet-tasting gas used as a mild anesthetic in dentistry and surgery.