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Showing results for laughing gas. Search instead for laughing+gas.
Synonyms

laughing gas

American  
laughing gas British  

noun

  1. another name for nitrous oxide

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

laughing gas Scientific  
/ lăfĭng /
  1. Nitrous oxide used as a mild anesthetic.


Etymology

Origin of laughing gas

First recorded in 1835–45

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Select locations will offer laughing gas as a pain reliever for insertion and removal of IUDs.

From The Wall Street Journal • Mar. 1, 2026

"Engine tests have shown varying degrees of emissions of laughing gas, which is a very potent greenhouse gas with more than 200 times the global warming impact than carbon dioxide."

From Science Daily • Feb. 5, 2024

It’s a little like “Mad Max” on laughing gas.

From New York Times • Jul. 20, 2023

He will say the new measures, including "hotspot" policing and a ban on nitrous oxide or laughing gas, underscores his zero-tolerance approach to anti-social behaviour which will see offenders receiving swift and visible punishments.

From Reuters • Mar. 26, 2023

There is no air in the City but there is breath, and every morning it races through him like laughing gas brightening his eyes, his talk, and his expectations.

From "Jazz" by Toni Morrison

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