dehydration

noun

de·​hy·​dra·​tion ˌdē-ˌhī-ˈdrā-shən How to pronounce dehydration (audio)
: the process of dehydrating
especially : an abnormal depletion of body fluids

Examples of dehydration 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.
Maier, 62, died due to probable malnutrition and dehydration on Feb. 22, 2024, one week after prison staff began intermittently shutting off the water to prevent him from flooding his cell. Vanessa Swales, jsonline.com, 20 Aug. 2025 He was treated for minor injuries and dehydration before reuniting with his family. Jenna Sundel, MSNBC Newsweek, 19 Aug. 2025 In extreme cases, this dehydration can lead to death. Andrea Tamayo, Scientific American, 15 Aug. 2025 Drinking plenty of water is key to good performance and can prevent muscle cramps, dizziness, and dehydration when running sprints or long distances. Cory Martin, Verywell Health, 8 Aug. 2025 See All Example Sentences for dehydration

Word History

First Known Use

1854, in the meaning defined above

Time Traveler
The first known use of dehydration was in 1854

Browse Nearby Words

Cite this Entry

“Dehydration.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/dehydration. Accessed 24 Aug. 2025.

Medical Definition

dehydration

noun
de·​hy·​dra·​tion ˌdē-hī-ˈdrā-shən How to pronounce dehydration (audio)
: the process of dehydrating
especially : an abnormal depletion of body fluids
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!