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.
For centuries people have collected it from the fog rolling in from oceans or over mountains using vegetation, containers or mesh nets to catch water vapor and condense it. Laura Paddison, CNN Money, 6 Sep. 2025 The only waste product is water vapor. Michael Taylor, Forbes.com, 2 Sep. 2025 As atmospheric rivers move over land, the water vapor rises up farther into the atmosphere. Anna Skinner, MSNBC Newsweek, 1 Sep. 2025 Researchers from the Institute of Science in Tokyo have discovered that water vapor may be the key to low-temperature solid oxide fuel cells. Christopher McFadden, Interesting Engineering, 30 Aug. 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 10 Sep. 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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