Dictionary.com
Thesaurus.com
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.

See Examples For:

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

From The Wall Street Journal Mar. 1, 2026

Eutrophication and acidification are some of the environmental problems that can be traced to the use of ammonia -- as well as emissions of laughing gas, which is a very potent greenhouse gas.

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

Vocabulary.com logo
by dictionary.com

Join 14,000,000 vocabulary learners

Start learning new words today on VocabTrainer.
You'll remember them forever.

Start training