laughing gas

名词 n.

英文释义

名词 n.
  1. Nitrous oxide, especially when used as an anaesthetic. uncountable
    — "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."

词形变化

laughing-gas alternative,dated

词源

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