Definition

1. Noun:
   • A colorless, sweet-smelling gas: Nitrous oxide is a chemical compound (N₂O) that is a gas at room temperature. It is used primarily as an anesthetic and analgesic agent, especially in medical and dental procedures. Informally, it is also known as "laughing gas" due to the euphoric effects it can produce.

Usage Examples

• Noun:
  • The dentist administered nitrous oxide to help the patient relax before the procedure.
  • Nitrous oxide is a common inhalation anesthetic used in minor surgeries.
  • The use of nitrous oxide for pain relief during childbirth is a standard practice in some hospitals.

Advanced Usage

• Chemical and Industrial Context: Beyond medicine, nitrous oxide is used as an oxidizer in rocket propellants and in motor racing to increase engine power (often referred to as "nitrous" or "NOS" in this context).
  • The mechanic installed a nitrous oxide system to boost the car's performance.
• Informal/Recreational Context: Due to its euphoric and dissociative effects, it is sometimes used recreationally, which can be dangerous and is illegal in many jurisdictions.
  • The party balloons were filled with nitrous oxide, which is a misuse of the substance.

Variants and Related Words

• Laughing gas (n): The common informal name for nitrous oxide, referring to its euphoric side effects.
  • The patient felt giddy after breathing the laughing gas.
• Dinitrogen monoxide (n): The systematic IUPAC name for the same chemical compound (N₂O).

Synonyms

• Inhalation anesthetic: A general term for anesthetic agents administered by breathing.
• Analgesic gas: A gas used to relieve pain.

Related Phrases

• Nitrous oxide sedation: A specific dental or medical technique using this gas to induce relaxation and reduce anxiety.
  • The child underwent the filling with the help of nitrous oxide sedation.
• To be on nitrous oxide: A phrase describing the state of receiving the gas as an anesthetic.
  • The patient was on nitrous oxide throughout the minor surgical procedure.

Noun

1. inhalation anesthetic used as an anesthetic in dentistry and surgery