Entonox

English

Etymology

Brand name.

Proper noun

Entonox

  1. (pharmacology) A mixture of nitrous oxide and oxygen used as an analgesic, especially during labour.
    Meronyms: nitrous oxide, N₂O; oxygen (strict sense), oxygen (loose sense), dioxygen, O₂
    Near-synonym: gas and air (informal and nonproprietary name)
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