hydrated

American

[hahy-drey-tid] / ˈhaɪ dreɪ tɪd /

adjective

chemically combined with water in its molecular form.
(of paper pulp) beaten until gelatinous for making into water-resistant paper.

hydrated British

/ ˈhaɪdreɪtɪd /

adjective

(of a compound) chemically bonded to water molecules

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Other Word Forms

nonhydrated adjective
unhydrated adjective

Etymology

Origin of hydrated

First recorded in 1800–10; hydrate + -ed ²

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

As the water disappeared, hydrated ferrous sulfates were left behind.

From Science Daily • Mar. 10, 2026

Stay hydrated, touch grass, see your friends, tell the people you love that you love them.

From Salon • Mar. 8, 2026

Anisimova, beaten finalist last year at Wimbledon and the US Open, said keeping hydrated the day before and on match day was crucial.

From Barron's • Jan. 24, 2026

“Building the snowpack on hydrated watersheds will help us avoid losing potential spring runoff to dry soils later in the season,” Anderson wrote in an email.

From Los Angeles Times • Nov. 24, 2025

It’s time to get hydrated and get serious.

From "Better Nate Than Ever" by Tim Federle

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023