nitrous

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nitrous

 [ni´trus]
pertaining to or containing nitrogen in its lowest valence.
nitrous oxide a colorless, odorless gas that is a weak inhalational anesthetic, usually used in combination with a potent halogenated inhalational anesthetic to produce general anesthesia or briefly for dental surgery. Its use as a sole agent requires high concentrations that may cause hypoxia. abuse poses the risk of anoxic death from asphyxia. Popularly known as laughing gas.

ni·trous

(nī'trŭs),
Denoting a nitrogen compound containing one less atom of oxygen than the nitric compounds; one in which the nitrogen is present in its trivalent state.

nitrous

/ni·trous/ (ni´trus) pertaining to nitrogen in its lowest valency.
nitrous oxide  a gas, N2O, used as a general anesthetic, usually in combination with another agent.

ni·trous

(nī'trŭs)
Denoting a nitrogen compound containing one less atom of oxygen than the nitric compounds; one in which the nitrogen is present in its trivalent state.

nitrous

pertaining to or containing nitrogen in its lowest valence.

nitrous oxide
a gas used by inhalation as a general anesthetic; called also laughing gas.