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laughing gas

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noun
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Origin of laughing gas

First recorded in 1835–45
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

How to use laughing gas in a sentence

British Dictionary definitions for laughing gas

laughing gas

noun
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

Scientific definitions for laughing gas

laughing gas
[ lăfĭng ]

Nitrous oxide used as a mild anesthetic.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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