Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun nitrous_oxide

1 sense of nitrous oxide

Sense 1
nitrous oxide, laughing gas -- (inhalation anesthetic used as an anesthetic in dentistry and surgery)
       => inhalation anesthetic, inhalation anaesthetic, inhalation general anesthetic, inhalation general anaesthetic -- (a gas that produces general anesthesia when inhaled)