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Definitions

nitrous oxide

NOUN
laughing gas
Synonyms


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.

However the increase in concentrations of heat-trapping greenhouse gases -- carbon dioxide, methane and nitrous oxide -- "to their highest level in at least 800,000 years" has "upset this equilibrium", the WMO said.

From Barron's • Mar. 23, 2026

The centers are also adding nitrous oxide, or laughing gas, for intrauterine device insertions.

From The Wall Street Journal • Mar. 1, 2026

Widespread fertilizer use could lead to harmful side effects, including emissions of nitrous oxide, a powerful greenhouse gas.

From Science Daily • Jan. 15, 2026

Ye has since sued his dentist for "recklessly" supplying Ye with "dangerous amounts of nitrous oxide".

From BBC • May 27, 2025

Chlorine is green and is deadly; nitrous oxide is colorless and makes people giggle.

From "Zero: The Biography of a Dangerous Idea" by Charles Seife