laughing gas

American  

noun

1. nitrous oxide.

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laughing gas British  

noun

1. another name for nitrous oxide

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laughing gas Scientific  

/ lăf′ĭng /

1. Nitrous oxide used as a mild anesthetic.

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Etymology

Origin of laughing gas

First recorded in 1835–45

Example Sentences

“So I wear that when I work with my patients, when they look horrified or complain, I quietly cut back on the laughing gas.”

From Los Angeles Times

Nitrous oxide – known colloquially as "laughing gas" – has many uses, from a painkiller during dental procedures to a whipping agent for canned whipped cream.

From BBC

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

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

From New York Times

A 25-year-old said taking too much laughing gas left her unable to walk and put her in hospital for six weeks.

From BBC