单词 | laughing gas |
释义 | laughing gas Nitrous oxide, N2O; so called from the exhilarating effects it produces when inhaled. (See also gas n.1 3 d.)
1842Brande Dict. Sci., etc., Nitrous oxide... When nitrous oxide is respired, it produces effects somewhat similar to those of intoxication; hence it has been called laughing gas. 1869Daily News 2 Jan., Protoxide of nitrogen, more commonly called laughing-gas. |

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