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.
Initial symptoms, such as watery diarrhea, nausea, vomiting, abdominal pain and dehydration, can occur within 6 to 24 hours following ingestion of these toxic mushrooms and usually go away within a day. Bay City News Service, Mercury News, 23 May 2026 There are typically several different factors at play, including dehydration and low fiber intake. Parents, 21 May 2026 Early symptoms of poisoning include watery diarrhea, nausea, vomiting, abdominal pain and dehydration, which can appear six to 24 hours after ingestion. Sean Campbell, Sacbee.com, 20 May 2026 This may include treating dehydration, maintaining oxygen levels and blood pressure, controlling pain and providing nutrition. Jen Christensen, CNN Money, 20 May 2026 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 25 May. 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
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