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.
Andrew dies of dehydration and starvation when he’s trapped in the attic after Millie leaves him with no food or water. Lea Veloso, StyleCaster, 26 Dec. 2025 Treatment includes drinking fluids to prevent dehydration and may include anti-diarrheal medication or antibiotics for those who develop severe intestinal illness. Mary Kekatos, ABC News, 23 Dec. 2025 Overwatering And Underwatering Both dehydration and root rot caused by too little or too much water can make your Christmas cactus struggle to be perky. Karen Brewer Grossman, Southern Living, 23 Dec. 2025 Experts say keeping up with fluids in colder months can help prevent fatigue and low energy since dehydration often goes unnoticed when people don’t feel as thirsty. Deirdre Bardolf, FOXNews.com, 20 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 31 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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