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
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When plumes of water vapor from Saturn's moon Enceladus spew into space, that water vapor freezes and snows back onto the icy moon's surface, but those snowflakes would, according to previous theories, not have the intricate structure of snowflakes on Earth. Keith Cooper, Space.com, 9 July 2025 Warm moist air rising in a thunderstorm updraft and the water vapor condenses. Marshall Shepherd, Forbes.com, 2 July 2025 That's because the sweat on one's body doesn't have any place to evaporate off the skin because the air is already so full of water vapor. Michel Martin, NPR, 20 June 2025 The name is completely accurate; somehow, D.S. & Durga managed to capture the scent of water vapor, which brings to mind theme-park vacations and concrete after rain. Danielle Sinay, Glamour, 28 May 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 19 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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