rehydrate

verb

re·​hy·​drate (ˌ)rē-ˈhī-ˌdrāt How to pronounce rehydrate (audio)
rehydrated; rehydrating; rehydrates
Synonyms of rehydratenext

transitive verb

: to restore fluid to (something dehydrated)
rehydratable
(ˌ)rē-ˈhī-ˌdrā-tə-bəl How to pronounce rehydrate (audio)
adjective
rehydration
ˌrē-ˌhī-ˈdrā-shən How to pronounce rehydrate (audio)
noun

Examples of rehydrate 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 cyclist was given water and time to rehydrate before those rescuers hauled that rider and broken bicycle downhill into Palisade. — Logan Smith, CBS News, 9 Aug. 2026 How Milk Supports Muscle Recovery A 2016 study funded by the National Dairy Council in Ireland found that low-fat milk rehydrated athletes more effectively than water or sports drinks. — Stephanie Brown, Verywell Health, 31 July 2026 They can also be rehydrated (soaked in water until plump) and added to salsas, sauces, or anything else that may benefit from their slightly sweet flavor. — Laura Payne, Encyclopedia Britannica, 14 July 2026 People who have been outside too long in extreme heat may develop excessive sweating, nausea, vomiting and muscle cramps; clear signals the body is overwhelmed and needs to be cooled down and rehydrated. — Gabby Sartori, USA Today, 14 July 2026 See All Example Sentences for rehydrate

Word History

First Known Use

1945, in the meaning defined above

Time Traveler
The first known use of rehydrate was in 1945

Rhymes for rehydrate

See All Rhymes for rehydrate

Browse Nearby Words

rehydratable
rehydrate
rehydration
See all Nearby Words

Cite this Entry

“Rehydrate.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/rehydrate. Accessed 11 Aug. 2026.

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Kids Definition

rehydrate

verb
re·​hy·​drate (ˈ)rē-ˈhī-ˌdrāt How to pronounce rehydrate (audio)
: to restore fluid to (something dehydrated)
rehydration
ˌrē-ˌhī-ˈdrā-shən How to pronounce rehydrate (audio)
noun

Medical Definition

rehydrate

transitive verb
re·​hy·​drate (ˈ)rē-ˈhī-ˌdrāt How to pronounce rehydrate (audio)
rehydrated; rehydrating
: to restore fluid to (something dehydrated)
especially : to restore body fluid lost in dehydration to
rehydrate a patient
rehydration
ˌrē-ˌhī-ˈdrā-shən How to pronounce rehydrate (audio)
noun

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