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.
Caffeine, alcohol, refined flour or sugar, and high-sodium foods can lead to dehydration and trigger cramps. Cristina Mutchler, Verywell Health, 31 Dec. 2025 Older adults, young children, and people with chronic health conditions remain at the highest risk for complications like pneumonia or dehydration. Tiffani Jackson, Fort Worth Star-Telegram, 31 Dec. 2025 Being on a plane can cause dehydration—and alcohol can exacerbate that. Korin Miller, SELF, 30 Dec. 2025 Those falls and the extended time spent on the ground led to Griffin’s hospitalization for dehydration and traumatic rhabdomyolysis, a condition in which a person’s muscles break down after an injury, according to the lawsuit brought by Griffin’s daughter, Maura North. Shelly Bradbury, Denver Post, 30 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 9 Jan. 2026.

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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