laughing gas

English

Etymology

From its euphoric effects. Coined by British chemist Humphry Davy in 1799.

Noun

laughing gas (uncountable)

  1. Nitrous oxide, especially when used as an anaesthetic.
    • 1913, Sir Arthur Conan Doyle, The Poison Belt‎:
      "You know how matters stand, dear," said he. "I have explained it also to our friends here. You're not afraid are you?" "It won't be painful, George?" "No more than laughing-gas at the dentist's."

Translations

See also
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