hydrate

1 of 3

noun (1)

hy·​drate ˈhī-ˌdrāt 

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

hydrate

2 of 3

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

hydrator

3 of 3

noun (2)

hy·​dra·​tor ˈhīˌdrātə(r) 

plural -s

: one that hydrates

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

It’s packed with peptides and a special complex called Myrixin to hydrate, plump, and strengthen the skin barrier. — Audrey Noble, Vogue, 27 July 2026

Choose products with a bit more flexibility, a buildable finish, and hydrating ingredients like hyaluronic acid or ceramides, which will keep skin moisturized throughout your wear. — Alanna Martine Kilkeary, Glamour, 27 July 2026

Known for its hydrating properties, castor oil is a widely popular ingredient for those struggling with flaky and dry scalps. — Isabel Bekele, InStyle, 26 July 2026

Glyx peptide complex, which plumps and hydrates the skin and doesn’t require a setting powder to stay put. — Jennifer Chan, PEOPLE, 25 July 2026

Word History

Etymology

and Noun (2)

First Known Use

Noun (1)

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