rehydrate

verb

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

transitive verb

: to restore fluid to (something dehydrated)
rehydratable adjective
rehydration 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.
Stay hydrated: Drink extra water to replenish and rehydrate your body. Lana Barhum, Verywell Health, 19 July 2025 Plants benefit from soaking their roots in water for a few hours to rehydrate them before planting. Kim Toscano, Southern Living, 20 June 2025 Here are the best methods to successfully rehydrate your mix. Erica Browne Grivas, Better Homes & Gardens, 6 June 2025 Alcohol-free mouth rinses and saliva substitutes, which come in the form of both sprays and gels, can also help to rehydrate your mouth, says Dr. Han. Amy Marturana Winderl, SELF, 8 July 2025 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

Browse Nearby Words

Cite this Entry

“Rehydrate.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/rehydrate. Accessed 29 Jul. 2025.

Kids Definition

rehydrate

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

More from Merriam-Webster on rehydrate

Last Updated: - Updated example sentences
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!