laughing gas
laughing gas — noun
1. A colourless gas (nitrous oxide, N₂O) breathed in to reduce pain during medical
A colourless gas (nitrous oxide, N₂O) breathed in to reduce pain during medical or dental treatment, and also used in the food industry as a propellant to force products such as whipped cream out of a can.
The dentist gave Minho laughing gas before filling his cavity.
give + laughing gas + before [procedure]
Nkechi felt dizzy but relaxed after breathing in the laughing gas through a small mask.
breathing in laughing gas through a mask
Many dental clinics keep laughing gas for patients who feel anxious about treatment.
Dr. Chen explained that laughing gas would help Sven stay calm during the procedure.
Ishaan said the laughing gas made his arm feel like it was floating.
Laughing gas is stored in blue cylinders marked with a warning label.
In the 1800s, people paid small amounts to try laughing gas at travelling shows.
Putri read that laughing gas is sometimes used as a propellant in whipped cream cans.
The chemistry teacher explained how laughing gas is made in a laboratory.
Dr. Ryan checked the laughing gas tank in the storage room before the patients arrived.
- nitrous oxide
the formal chemical name for the same substance; interchangeable with laughing gas in most contexts
- dinitrogen monoxide
rare; used only in very formal chemical writing
用法筆記
Frequently used in dentistry to reduce anxiety during treatment. In chemistry and food-industry contexts, the same substance (nitrous oxide) acts as a propellant in products such as whipped cream. The gas does not put patients fully to sleep — it reduces pain while they stay awake.