: 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
Cheryl Wagemann, InStyle, 8 Feb. 2026
Stir and set aside to hydrate and thicken.
—Virginia Willis, AJC.com, 8 Feb. 2026
Noyz Mylk de Parfum contains hyaluronic acid, witch hazel, sunflower seed oil, and glycerin derivatives—common hydrating and soothing agents found in skin care.
—Grace McCarty, Glamour, 6 Feb. 2026
Maelove Hydrator Hyaluronic Acid B5 Serum Miller also relies on this hydrating serum in the winter months, using it under a moisturizer and makeup.
—Melanie Fincher, Southern Living, 6 Feb. 2026
See All Example Sentences for hydrate
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Verb
Stewart is a big fan of the Merit Perfecting Complexion Stick’s hydrating formula, natural finish, and skin-blurring effect.
—Cheryl Wagemann, InStyle, 8 Feb. 2026
Stir and set aside to hydrate and thicken.
—Virginia Willis, AJC.com, 8 Feb. 2026
Noyz Mylk de Parfum contains hyaluronic acid, witch hazel, sunflower seed oil, and glycerin derivatives—common hydrating and soothing agents found in skin care.
—Grace McCarty, Glamour, 6 Feb. 2026
Maelove Hydrator Hyaluronic Acid B5 Serum Miller also relies on this hydrating serum in the winter months, using it under a moisturizer and makeup.
—Melanie Fincher, Southern Living, 6 Feb. 2026
See All Example Sentences for hydrate
Cite this Entry
“Hydrate.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/hydrate. Accessed 10 Feb. 2026.
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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