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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 outlets reported that investigators determined that Ruby died of dehydration and malnutrition. Liam Quinn, PEOPLE, 5 Dec. 2025 People can experience rapid fluid loss due to vomiting and diarrhea, which can cause dehydration. Jasmine Laws, MSNBC Newsweek, 4 Dec. 2025 Other reasons to contact a health care clinician include trouble catching your breath, persistent wheezing, severe headaches, one-sided ear pain, sinus pain lasting more than a few days or dehydration. Katia Hetter, CNN Money, 4 Dec. 2025 Deicing salt that lands on soil around trees, shrubs, perennials, and lawn, as well as salt runoff, can cause plant dehydration and challenging soil problems. Megan Hughes, Better Homes & Gardens, 1 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 8 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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