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.

Experts also warn that people should take care when using saunas, such as ensuring they are hydrated, while also making sure it takes place alongside other healthy activities.

From BBC • Apr. 6, 2026

The findings indicate that volcanic heat at the Juventae Plateau and geothermal energy beneath Aram Chaos could convert common hydrated sulfates into ferric hydroxysulfate.

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

Within half an hour, we’re fed and hydrated and have enough food to keep us going for the day.

From "Without Refuge" by Jane Mitchell

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