hydrated

[hahy-drey-tid]
adjective
1.
chemically combined with water in its molecular form.
2.
(of paper pulp) beaten until gelatinous for making into water-resistant paper.

Origin:
1800–10; hydrate + -ed2

nonhydrated, adjective
unhydrated, adjective
Dictionary.com Unabridged

hydrate

[hahy-dreyt]
noun
1.
any of a class of compounds containing chemically combined water. In the case of some hydrates, as washing soda, Na 2 CO 3 ⋅10H 2 O, the water is loosely held and is easily lost on heating; in others, as sulfuric acid, SO 3 ⋅H 2 O, or H 2 SO 4 , it is strongly held as water of constitution.
verb (used with object), verb (used without object), hydrated, hydrating.
2.
to combine chemically with water.

Origin:
1795–1805; hydr-1 + -ate2

hydration, noun
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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Collins
World English Dictionary
hydrate (ˈhaɪdreɪt)
 
n
1.  a chemical compound containing water that is chemically combined with a substance and can usually be expelled without changing the constitution of the substance
2.  a chemical compound that can dissociate reversibly into water and another compound. For example sulphuric acid (H2SO4) dissociates into sulphur trioxide (SO3) and water (H2O)
3.  (not in technical usage) a chemical compound, such as a carbohydrate, that contains hydrogen and oxygen atoms in the ratio two to one
 
vb
4.  to undergo or cause to undergo treatment or impregnation with water
 
[C19: from hydro- + -ate1]
 
hy'dration
 
n
 
'hydrator
 
n

hydrated (ˈhaɪdreɪtɪd)
 
adj
(of a compound) chemically bonded to water molecules

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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Etymonline
Word Origin & History

hydrate
1802, "compound of water and another chemical," from Fr. hydrate, coined by Fr. chemist Joseph-Louis Proust (1754-1826) from Gk. hydr-, stem of hydor "water" (see water (n.1)). The verb is first attested 1850.
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Medical Dictionary

hydrate hy·drate (hī'drāt')
n.
A solid compound containing water molecules combined in a definite ratio as an integral part of a crystal. v. hy·drat·ed, hy·drat·ing, hy·drates

  1. To rehydrate.

  2. To supply water to a person or thing in order to restore or maintain fluid balance.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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American Heritage
Science Dictionary
hydrate   (hī'drāt')  Pronunciation Key 
Noun   A compound produced by combining a substance chemically with water. Many minerals and crystalline substances are hydrates.

Verb  
  1. To combine a compound with water, especially to form a hydrate.

  2. To supply water to a person in order to restore or maintain a balance of fluids.


The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Example sentences
When subjected to cold water it swells, and is called hydrated gelatin.
For instance, both bodies contain minerals known as carbonates and hydrated
  silicates.
Users should stay well hydrated, as some of those ingredients act as diuretics.
It's another gentle abrasive, even better than hydrated silica at penetrating
  scratches in tooth enamel.
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