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 hydrogen fuel cells, electricity is generated through chemical reactions involving hydrogen and oxygen, resulting in heat and water vapor as the only byproducts. Ken Silverstein, Forbes, 19 Dec. 2024 Humans are effective at cooling down in hot and dry environments, but in humid environments like Hong Kong, a high amount of water vapor in the air makes sweat evaporate more slowly, so the body has to work harder to cool itself. Olatunji Osho-Williams, Smithsonian Magazine, 18 Dec. 2024 Source, a startup based in Scottsdale, Ariz., makes a panel that uses a material to capture water vapor from the air. Katie Fehrenbacher, Axios, 20 Nov. 2024 Primary hazards include high levels of volcanic gases—predominantly water vapor (H2O), carbon dioxide (CO2), and sulfur dioxide (SO2). Josh Hammer, Newsweek, 23 Dec. 2024 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

Dictionary Entries Near water vapor

Cite this Entry

“Water vapor.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/water%20vapor. Accessed 7 Jan. 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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