hydrate

1 of 2

noun

hy·​drate ˈhī-ˌdrāt 

: a compound formed by the union of water with some other substance

hydrate

2 of 2

verb

hydrated; hydrating

transitive verb

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

intransitive verb

: to become a hydrate

hydration

hī-ˈdrā-shən 

noun

hydrator

ˈhī-ˌdrā-tər 

noun

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

Noun

This gooey essence hydrates, soothes, and leaves skin looking plump without feeling greasy. —Simon Hill, Wired News, 31 Mar. 2025

The slightly curved wand coats each lash in nourishing ingredients—biotin helps to fortify lashes to protect against breakage, while antioxidant-rich ingredients like peptides, vitamin E, and panthenol help to condition and hydrate. —Conçetta Ciarlo, Vogue, 26 Mar. 2025

Verb

March also got off to a wet, snowy start, with several storms hydrating the region. —Veronica Fernandez-Alvarado, Sacramento Bee, 21 Mar. 2025

The second ingredient in the formula is glycerin, a humectant that pulls water from the air to keep skin hydrated for hours. —Annie Blackman, Allure, 20 Mar. 2025

Word History

First Known Use

Noun

1802, in the meaning defined above

Verb

1846, in the meaning defined at transitive sense 1

Phrases Containing hydrate

• chloral hydrate

Rhymes for hydrate

• abate
• airfreight
• await
• baseplate
• berate
• birthdate
• birthrate
• bookplate
• borate
• breastplate
• bromate
• casemate

Kids 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

hydration

hī-ˈdrā-shən 

noun

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

transitive verb

: to cause to take up or combine with water or the elements of water

intransitive verb

: to become a hydrate