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.
Dampen the peat moss before adding it to the soil to rehydrate it. — Karen Brewer Grossman, Southern Living, 23 June 2026 Soaking the plant will rehydrate the roots and prepare the roses for planting. — Michelle Mastro, Martha Stewart, 4 June 2026 Let the flowers rest in the bucket of water for an hour to rehydrate fully before arranging them. — Viveka Neveln, Better Homes & Gardens, 16 June 2026 Mullins also recommends rehydrating every hour or hour and a half. — Jack Armstrong, Memphis Commercial Appeal, 3 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 7 Jul. 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

More from Merriam-Webster on rehydrate

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