verb (used with object), de·hy·drat·ed, de·hy·drat·ing.
to deprive (a chemical compound) of water or the elements of water.
to free (fruit, vegetables, etc.) from moisture for preservation; dry.
to remove water from (the body or a tissue).
to deprive of spirit, force, or meaning; render less interesting or effectual.
verb (used without object), de·hy·drat·ed, de·hy·drat·ing.
to lose water or moisture: Milk dehydrates easily.
Origin of dehydrate
First recorded in 1850–55; de-
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Examples from the Web for dehydrate
Historical Examples of dehydrate
British Dictionary definitions for dehydrate
Derived Formsdehydration, noundehydrator, noun
to lose or cause to lose water; make or become anhydrous
to lose or cause to lose hydrogen atoms and oxygen atoms in the proportions in which they occur in water, as in a chemical reaction
to lose or deprive of water, as the body or tissues
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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Word Origin and History for dehydrate
1854, from de- + hydrate (v.). A chemical term at first, given a broader extension 1880s. Related: Dehydration (1834).
Online Etymology Dictionary, © 2010 Douglas Harper
To remove water from; make anhydrous.
To preserve by removing water from something, such as vegetables.
To deplete the bodily fluids of an individual.
The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.