dehydration

noun

de·​hy·​dra·​tion ˌdē-ˌhī-ˈdrā-shən How to pronounce dehydration (audio)
Synonyms of dehydrationnext
: 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.
The New England Aquarium initially treated and stabilized the 35 Kemp's ridley sea turtles, some of whom were battling dehydration and pneumonia. Kelli Bender, PEOPLE, 12 Dec. 2025 Fans are also encouraged to drink water throughout the game, because cold water dehydration is a possible. Sara Tenenbaum, CBS News, 12 Dec. 2025 Serious complications include irregular heart rhythm, bone pain, and severe dehydration. Jillian Kubala, Health, 12 Dec. 2025 Malnutrition, dehydration, stroke and spinal cord injuries can similarly impair heat regulation. Daryl Austin, USA Today, 11 Dec. 2025 See All Example Sentences for dehydration

Word History

First Known Use

1840, in the meaning defined above

Time Traveler
The first known use of dehydration was in 1840

Browse Nearby Words

Cite this Entry

“Dehydration.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/dehydration. Accessed 15 Dec. 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
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