nitrous_oxide
1. [ noun ] (chemistry,medicine,dentistry,pharmacology,surgery) inhalation anesthetic used as an anesthetic in dentistry and surgery
Synonyms: laughing_gas
Related terms: inhalation_anesthetic ammonium_nitrate
Similar spelling:   nitrogen_oxide
  nitrous_acid
  nitric_oxide
  nitrogenous
  nitrous_bacteria
  nitrogen_dioxide