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.
In fact, the Martian atmosphere contains more water vapor than the upper layers of Earth's atmosphere, according to JPL. Kenna Hughes-Castleberry, Space.com, 9 June 2025 Atmospheric rivers coming from the Pacific Ocean smash into the mountains, causing the water vapor to rise and turn into liquid. Amy Graff, New York Times, 3 May 2025 In 2019, the Hubble Space Telescope detected what appeared to be water vapor in its atmosphere. Thomas G. Moukawsher, MSNBC Newsweek, 17 Apr. 2025 These vapors, which include carbon dioxide, water vapor, and volatile organic compounds such as ammonia, can reveal vital information about your metabolic status, disease states, and overall health. New Atlas, 9 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 6 Jul. 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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