hydrate

v. combine chemically with water (Chemistry)

n. compound containing water combined with another compound or element (Chemistry)

Hydrate is a term used in inorganic chemistry and organic chemistry to indicate that a substance contains water.In organic chemistry, a hydrate is a compound formed by the addition of water to a host molecule. Thus ethanol could be considered to be the hydrate of ethylene. These substances do not contain water as such, but have their constituents (hydrogen, oxygen, hydroxyl) so arranged that water may be eliminated. Hence, hydrates are derivatives of, or compounds with, hydroxyl. One such example is chloral hydrate.
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Hydrate /hy·drate/ 1. any compound of a radical with water. 2. any salt or other compound containing water of crystallization. hy·drate n. [more]Hydrate - Community and Resources

Noun
1. any compound that contains water of crystallization
(hypernym) compound, chemical compound
(hyponym) monohydrate
Verb
1. supply water or liquid to in order to maintain a healthy balance; "the bicyclists must be hydrated frequently"
(hypernym) supply, provide, render, furnish
2. become hydrated and combine with water
(hypernym) change
(derivation) hydration
3. cause to be hydrated; add water or moisture to; "hydrate your skin"
(antonym) dehydrate, dry up, desiccate
(hypernym) humidify, moisturize, moisturise
(hyponym) slack, slake
(derivation) hydration

n. hydrate, compound containing water combined with another compound or element (Chemistry)