nitrous oxide

nitrous oxide A gas that can cause general anesthesia and that should be administered with other anesthetic agents. Nitrous oxide is not used alone today because the concentration of nitrous oxide needed to produce anesthesia is close to the concentration that seriously lowers the blood oxygen level, creating a hazardous hypoxic state. Nitrous oxide is used sometimes as a recreational drug for its euphoric effect. Also known as laughing gas and nitrous.