: a compound formed by the union of water with some other substance
hydrated; hydrating
1
: to cause to take up or combine with water or the elements of water
2
: to supply with ample fluid or moisture
hydrates and softens the skin
: to become a hydrate
Examples of hydrate in a Sentence
Verb
lotions and creams that hydrate the skin
Drink fluids to hydrate the body.
Recent Examples on the Web
Annie Blackman, Allure, 18 July 2024
The shampoo cleanses but doesn’t strip my hair and the conditioner hydrates without weighing down my fine strands.
—Elizabeth Denton, StyleCaster, 16 July 2024
Claire Sullivan, WWD, 16 July 2024
Many calls result from people who get overheated while exercising in extreme heat and children who play in pools and lie out in the sun but fail to continually hydrate.
—Antonio Olivo, Washington Post, 15 July 2024
See all Example Sentences for hydrate 
Noun
Innisfree's Green Tea Caffeine Bright-Eye Serum comes with a cooling metal applicator to wake up your undereyes as the formula hydrates and brightens.
—Annie Blackman, Allure, 18 July 2024
The shampoo cleanses but doesn’t strip my hair and the conditioner hydrates without weighing down my fine strands.
—Elizabeth Denton, StyleCaster, 16 July 2024
Verb
On top of promising line-smoothing benefits, snail mucin is also inherently hydrating, as the ingredient locks moisture on your skin.
—Claire Sullivan, WWD, 16 July 2024
Many calls result from people who get overheated while exercising in extreme heat and children who play in pools and lie out in the sun but fail to continually hydrate.
—Antonio Olivo, Washington Post, 15 July 2024
See all Example Sentences for hydrate
These examples are programmatically compiled from various online sources to illustrate current usage of the word 'hydrate.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.
Dictionary Entries Near hydrate
Cite this Entry
“Hydrate.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/hydrate. Accessed 26 Jul. 2024.
Copy CitationKids Definition
hydrate
1 of 2 noun
hy·drate
ˈhī-ˌdrāt 
: a compound formed by the union of water with some other substance
a hydrate of copper sulfate
hydrate
2 of 2 verb
hydrated; hydrating
1
: to cause to take up or combine with water or the elements of water
2
: to supply with sufficient amounts of fluid or moisture
Medical Definition
hydrate
1 of 2 noun
hy·drate
ˈhī-ˌdrāt
: a compound (as Glauber's salt) formed by the union of water with some other substance
hydrate
2 of 2 verb
hydrated; hydrating
: to cause to take up or combine with water or the elements of water
: to become a hydrate
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