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
During its observations, MAJIS identified infrared emissions from water vapor and carbon dioxide molecules.
—
Robert Lea, Space.com, 15 Apr. 2026
Vehicle uses a hydrogen fuel cell system The vehicle uses a hydrogen fuel cell system that converts hydrogen into electricity to power an electric motor, producing only water vapor as a byproduct.
—Prabhat Ranjan Mishra, Interesting Engineering, 12 Apr. 2026
Thanks to the return of southeasterly winds carrying more atmospheric moisture from the Gulf Coast into Central Texas, surface dew point temperatures (an indicator of water vapor saturation in the air) will steadily increase ahead of a potentially rainy weekend, forecasters said.
—Roberto Villalpando, Austin American Statesman, 8 Apr. 2026
Near sea level, where atmospheric pressure can be higher than on the side of a mountain, the weight of the atmosphere forces water vapor molecules into a smaller space, which has the effect of increasing relative humidity by building up the density of overall moisture.
—John P. Rafferty, Encyclopedia Britannica, 7 Apr. 2026
See All Example Sentences for water vapor
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Robert Lea, Space.com, 15 Apr. 2026
Vehicle uses a hydrogen fuel cell system The vehicle uses a hydrogen fuel cell system that converts hydrogen into electricity to power an electric motor, producing only water vapor as a byproduct.
—Prabhat Ranjan Mishra, Interesting Engineering, 12 Apr. 2026
Thanks to the return of southeasterly winds carrying more atmospheric moisture from the Gulf Coast into Central Texas, surface dew point temperatures (an indicator of water vapor saturation in the air) will steadily increase ahead of a potentially rainy weekend, forecasters said.
—Roberto Villalpando, Austin American Statesman, 8 Apr. 2026
Near sea level, where atmospheric pressure can be higher than on the side of a mountain, the weight of the atmosphere forces water vapor molecules into a smaller space, which has the effect of increasing relative humidity by building up the density of overall moisture.
—John P. Rafferty, Encyclopedia Britannica, 7 Apr. 2026
See All Example Sentences for water vapor
Cite this Entry
“Water vapor.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/water%20vapor. Accessed 24 Apr. 2026.
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