Laughing-gas
21laughing gas — noun (U) informal a gas that is sometimes used to stop you feeling pain during an operation …
22laughing gas — UK [ˈlɑːfɪŋ ˌɡæs] / US [ˈlæfɪŋ ˌɡæs] noun [uncountable] informal the gas nitrous oxide used in the past by doctors and dentists to prevent people feeling pain during a medical operation …
23laughing gas — laugh′ing gas n. chem. pha nitrous oxide • Etymology: 1835–45 …
24laughing gas — /ˈlafɪŋ gæs/ (say lahfing gas) noun nitrous oxide, N2O, which when inhaled sometimes produces exhilarating effects, used as an anaesthetic in dentistry, minor surgery, etc …
25laughing gas — noun Date: 1842 nitrous oxide …
26laughing gas. — See nitrous oxide. [1835 45] * * * …
27laughing gas — noun A common name for nitrous oxide used as an anaesthetic. Syn: nitrous oxide …
28laughing gas — noun non technical term for nitrous oxide …
29laughing gas — see nitrous oxide …
30laughing gas — noun inhalation anesthetic used as an anesthetic in dentistry and surgery • Syn: ↑nitrous oxide • Hypernyms: ↑inhalation anesthetic, ↑inhalation anaesthetic, ↑inhalation general anesthetic, ↑inhalation general anaesthetic …