water vapor

noun

: water in a vaporous form especially when below boiling temperature and diffused (as in the atmosphere)

Examples of water vapor in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
The researchers found that this could provide a tenuous atmosphere of water vapor that could persist for up to 200 million years. Paul Sutter, Space.com, 3 June 2025 This might be partially explained by the underwater volcano near Tonga that erupted in 2022 and threw a plume of water vapor into the atmosphere. Margherita Bassi, Smithsonian Magazine, 30 May 2025 Overnight, officials were primarily concerned with high levels of volcanic gas such as water vapor, carbon dioxide and sulfur dioxide that can have far-reaching effects downwind. Eduardo Cuevas, USA Today, 27 May 2025 These release water vapors into the air, helping thin mucus and reduce nasal swelling. Lindsay Curtis, Health, 11 Apr. 2025 See All Example Sentences for water vapor

Word History

First Known Use

15th century, in the meaning defined above

Time Traveler
The first known use of water vapor was in the 15th century

Browse Nearby Words

Cite this Entry

“Water vapor.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/water%20vapor. Accessed 18 Jun. 2025.

Kids Definition

water vapor

noun
: water in a gaseous form especially when below boiling temperature and spread through the atmosphere

Medical Definition

water vapor

noun
: water in a vaporous form especially when below boiling temperature and diffused (as in the atmosphere)
Last Updated: - Updated example sentences
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