noun
laughing gas; nitrous oxide
Medical and colloquial term for nitrous oxide, used as an anesthetic or recreational inhalant.
See also: 亜酸化窒素
歯科治療で笑気麻酔が使われることがある。
Laughing gas anesthesia is sometimes used in dental treatment.
笑気は亜酸化窒素の俗称だ。
Laughing gas is a common name for nitrous oxide.