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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
As wind blew air through a mesh coated with catalysts to extract nitrogen and hydrogen from water vapor, the device produced enough ammonia with a sufficiently high concentration for use as a hydroponic fertilizer – all without the need for additional electricity or radiation.
—New Atlas, 16 Dec. 2024
Humidity is defined as the concentration of water vapor present in the air.
—Meghan Overdeep, Southern Living, 13 Dec. 2024
Atmospheric rivers are narrow bands of concentrated water vapor that carry immense amounts of moisture from tropical regions to higher latitudes.
—Daniel R. Depetris, Newsweek, 13 Dec. 2024
Warmer air and ocean temperatures add more water vapor to the atmosphere, which storms can ingest and wring out over land.
—Andrew Freedman, Axios, 18 Nov. 2024
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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 22 Dec. 2024.
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)
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