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

Verb

Here are some ways to keep your lawn hydrated without broadcast sprinklers. — Abby Monteil, The Spruce, 5 July 2026

Children should also hydrate and play in shaded areas if available. — Laura Horne july 3, Charlotte Observer, 3 July 2026

This multitasking hair care product is known for reducing frizz, boosting shine, and hydrating split ends, and some natural oils even help with hair growth. — Ariana Yaptangco, Glamour, 5 July 2026

Reduce your alcohol and sugar intake and pivot to hydrating fruit and vegetables. — Julia Buckley, CNN Money, 6 July 2026

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