water vapor


Definition of water vapor 

: 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

Instead, the most convincing explanation was water vapor and gases jetting from ‘Oumuamua, the researchers write today in Nature. Matt Warren, Science | AAAS, "Mysterious interstellar visitor is a comet, flight path reveals," 27 June 2018 The Emerald Necklace, Boston’s 7-mile pendant of parks built in the 19th century, will soon have a new adornment: a string of artworks made from water vapor. Graham Ambrose, BostonGlobe.com, "‘Fog sculptures’ to adorn Emerald Necklace," 24 June 2018 In late 2013, tantalizing images from the Hubble Space Telescope revealed possible 125-mile-high plumes of water vapor erupting from a region in the moon’s southern hemisphere. National Geographic, "Water Geysers Likely Found on This 'Alien' Ice Moon," 14 May 2018 Culnan said that, under normal circumstances, hydrogen sulfide mixes with sulfur dioxide from the volcano to become water vapor and solid sulfur, but the deep wells allow some hydrogen sulfide to rise before that process occurs. Breena Kerr, Washington Post, "Volcanic activity threatens Hawaii geothermal plant long at center of resident concerns," 11 May 2018 Large amounts of water vapor are drawn inward and upward, condensing into a mass of rain. Jason Samenow, Washington Post, "This towering ‘mushroom cloud’ in Alabama seems unreal. But it’s a textbook summer storm.," 14 June 2018 The water vapor then cools, condenses and can be collected. Emily Matchar, Smithsonian, "Could This Low-Cost Device Provide Clean Drinking Water To Those In Need?," 17 May 2018 In recent years, the Hubble Space Telescope has spotted what looks like plumes, likely of water vapor, reaching more than 100 miles above the surface. New York Times, "New Dive Into Old Data Finds Plumes Erupt From Jupiter’s Moon Europa," 14 May 2018 The silver iodide will allow water vapor to condense, forming clouds that will draw rain. Laura Yan, Popular Mechanics, "China Is Building a Massive Network of Chemical Rainmakers," 15 Apr. 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'water vapor.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of water vapor

15th century, in the meaning defined above

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Last Updated

6 Oct 2018

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The first known use of water vapor was in the 15th century

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More Definitions for water vapor

water vapor


Medical Definition of water vapor 

: water in a vaporous form especially when below boiling temperature and diffused (as in the atmosphere)

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