411 REFERENCE · Wiktionary
Entonox
Reference material by Wiktionary contributors. This retains its source identity and is not 411 news reporting.
English
Etymology
Brand name.
Proper noun
en pharmaceutical drug A mixture of nitrous oxide and oxygen used as an analgesic, especially during labour.
en nitrous oxide<id:Q905750> mul:N₂O<id:Q905750> ; oxygen<id:Q629><qq:strict sense> oxygen<id:Q5203615><qq:loose sense> dioxygen<id:Q5203615> mul:O₂<id:Q5203615>
en gas and air<id:Q1881347><qq:informal and nonproprietary name>
en 3-syllable words