evap·​o·​ra·​tion i-ˌva-pə-ˈrā-shən How to pronounce evaporation (audio)
: the act or process of evaporating:
: change from a liquid to a vapor
evaporation of water
But warming increases the evaporation of ocean water, which could increase the snowfall on the Arctic and Antarctic ice sheets, remove water from the ocean, and lower sea level.Jack M. Hollander
: the vanishing or disappearance of something
The pope's attempt to arrest the evaporation of the Christian tradition in Europe was also unsuccessful.Conrad Black
No longer a machine that accelerates the evaporation of resources, in the Roman context the banquet becomes a theatre of wealth and property, of social distinction, or social-climbing.James N. Davidson

Examples of evaporation in a Sentence

Recent Examples on the Web Yet the rapid evaporation of confidence in Credit Suisse after a string of missteps and losses, and its subsequent emergency rescue by UBS, has dented that previous consensus. Bastian Benrath, Fortune Europe, 4 Apr. 2024 This type of gasoline is formulated to prevent excessive evaporation when temperatures warm. Brianna Taylor, Sacramento Bee, 2 Apr. 2024 The ’90s saw the confluence of two forces that hindered many women constructors: the evaporation of their free time, which had been on the decline as more and more women entered the workforce starting in the ’70s, and the advent of now-ubiquitous crossword-constructing software. Sophia Stewart, The Atlantic, 12 Mar. 2024 Growing azolla can help with water security as well, as a mat of vegetation on the surface of a water tank reduces evaporation. Matt Simon, WIRED, 11 Mar. 2024 This cost-effective step will reduce evaporation and therefore retain water in the soil for the plant’s use. Kobi Bardugo, San Diego Union-Tribune, 9 Mar. 2024 The water slowly moved back to its original lakebed, but with the winds speeding up evaporation, Lake Manly was left shallower and muddier than before. Katherine Itoh, NBC News, 8 Mar. 2024 But continuous inkjets lose ink to evaporation even when recycling is used, limiting their appeal. Phillip W. Barth, IEEE Spectrum, 25 Mar. 2024 Water on the ground or in bodies of water turns back into water vapor through a process known as evaporation. Denise Chow, NBC News, 25 Feb. 2024

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'evaporation.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History

First Known Use

14th century, in the meaning defined above

Time Traveler
The first known use of evaporation was in the 14th century

Dictionary Entries Near evaporation

Cite this Entry

“Evaporation.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/evaporation. Accessed 25 Apr. 2024.

Kids Definition


: the process of evaporating

Medical Definition


evap·​o·​ra·​tion i-ˌvap-ə-ˈrā-shən How to pronounce evaporation (audio)
: the change by which any substance is converted from a liquid state into and carried off in vapor
specifically : the conversion of a liquid into vapor in order to remove it wholly or partly from a liquid of higher boiling point or from solids dissolved in or mixed with it
evaporate verb
evaporated; evaporating
evaporator noun

More from Merriam-Webster on evaporation

Last Updated: - Updated example sentences
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!