nitrous oxide

noun

A nonflammable gas commonly used in surgery and dentistry for its anaesthetic and analgesic effects and in motorsport for bursts of added power.

“Holonym: gas and air”

Similar
laughing gasdinitrogen oxidedinitrogen monoxidemul:E942nosnoxhippy crack
Ask AI about this wordChatGPTClaudePerplexityGoogle AIGrok

Meanings

nounnitrous oxide (uncountable)
  1. uncountablechemistryA nonflammable gas commonly used in surgery and dentistry for its anaesthetic and analgesic effects and in motorsport for bursts of added power.

    Holonym: gas and air

    1 more example

    On social media and beyond, many have taken to using the brand’s name in a more colloquial fashion, with “Galaxy Gas” being used as a catchall for nitrous oxide inhalants at large, regardless of whether they are actually Galaxy Gas products or not.

    2024 September 23, Trace William Cowen, “What the Hell Is Galaxy Gas?”, in Complex

    Synonyms: laughing gas, dinitrogen oxide, dinitrogen monoxide, mul:E942, nos, nox, NOx, hippy crack

Synonyms & antonyms

nounA nonflammable gas commonly used in surgery and dentistry for its anaesthetic and analgesic effects and in motorsport for bursts of added power.

Similar
laughing gasdinitrogen oxidedinitrogen monoxidemul:E942nosnoxNOxhippy crack

More synonyms by meaning

nouninhalation anesthetic used as an anesthetic in dentistry and surgery

Similar
laughing gas
Broader
inhalation anestheticinhalation anaestheticinhalation general anesthetic
Also see
dinitrogen monoxidedinitrogen oxidelaughing gas

Synonym sets from Open English WordNet, CC BY 4.0.

Translations

Catalan òxid nitrós
  • òxid nitrósnitrous oxide
Chinese Mandarin 一氧化二氮, 氧化亞氮 /氧化亚氮
  • 一氧化二氮 (yīyǎnghuà'èrdàn)nitrous oxide
  • 氧化亞氮 /氧化亚氮 (yǎnghuàyàdàn)nitrous oxide
Czech oxid dusný
  • oxid dusnýnitrous oxide
Finnish typpioksiduuli, dityppioksidi
  • typpioksiduulinitrous oxide
  • dityppioksidinitrous oxide
French protoxyde d'azote
  • protoxyde d'azotenitrous oxide
German Distickstoffmonoxid
  • Distickstoffmonoxidnitrous oxide
Greek υποξείδιο του αζώτου
  • υποξείδιο του αζώτου (ypoxeídio tou azótou)nitrous oxide
Hungarian dinitrogén-oxid, dinitrogén-monoxid
  • dinitrogén-oxidnitrous oxide
  • dinitrogén-monoxidnitrous oxide
  • kéjgáznitrous oxide
  • nevetőgáznitrous oxide
Japanese 亜酸化窒素
  • 亜酸化窒素 (asanka chisso)nitrous oxide
Polish podtlenek azotu, gaz rozweselający
  • podtlenek azotunitrous oxide
  • gaz rozweselającynitrous oxide
Portuguese óxido nitroso, gás hilariante
  • óxido nitrosonitrous oxide
  • gás hilariantenitrous oxide
  • gás do risonitrous oxide
Russian за́кись азо́та
  • за́кись азо́та (zákisʹ azóta)nitrous oxide
Slovak oxid dusný
  • oxid dusnýnitrous oxide
Spanish óxido nitroso
  • óxido nitrosonitrous oxide
Thai ไนตรัสออกไซด์
  • ไนตรัสออกไซด์ (nai-dtrâs-ɔ́k-saai)nitrous oxide
Turkish nitröz oksit
  • nitröz oksitnitrous oxide
Cite this entry
APA

nitrous oxide. (n.d.). In WatkinsX Dictionary. Retrieved November 4, 2026, from https://dictionary.watkinsx.com/word/nitrous%20oxide

MLA

“nitrous oxide.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/nitrous%20oxide. Accessed November 4, 2026.

Chicago

WatkinsX Dictionary, s.v. “nitrous oxide,” accessed November 4, 2026, https://dictionary.watkinsx.com/word/nitrous%20oxide.

Source: nitrous oxide on Wiktionary, CC BY-SA 4.0.