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 or without object)

, hy·drat·ed, hy·drat·ing.

1. to combine chemically with water.

hydrate

/ ˈhaɪdreɪt /

noun

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 (H 2 SO 4 ) dissociates into sulphur trioxide (SO 3 ) and water (H 2 O)
3. not in technical usage a chemical compound, such as a carbohydrate, that contains hydrogen and oxygen atoms in the ratio two to one

verb

1. to undergo or cause to undergo treatment or impregnation with water

hydrate

/ hī′drāt′ /

Noun

1. 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.

Derived Forms

• ˈhydrator, noun
• hyˈdration, noun

Other Words From

• hy·dration noun

Word History and Origins

Origin of hydrate¹

First recorded in 1795–1805; hydr- ¹ + -ate ²

Word History and Origins

Origin of hydrate¹

C19: from hydro- + -ate ¹

Example Sentences

One cubic foot of solid methane hydrate releases about 164 cubic feet of gas.

From The Daily Beast

Known as "fire ice," methane hydrate is located in fairly vast quantities on the ocean floor.

From The Daily Beast

I'm a big advocate of fracking, but I'll confess I haven't heard of methane hydrate since a geology class several years ago.

From The Daily Beast

Launching this spring, it promises “repair, hydrate and renew.”

From The Daily Beast

According to this hypothesis, ether is a hydrate of etherin.

From Project Gutenberg

Gelatinous hydrate of magnesia (as the last).199 Calcined magnesia (taken as the first).

From Project Gutenberg

Alunite, al′un-īt, n. a mineral consisting of common alum together with normal hydrate of aluminium.

From Project Gutenberg

There were just the slightest traces of concentrated amylene hydrate on her lips.

From Project Gutenberg

After cooling the last time, dilute with water and add sodium hydrate till neutral.

From Project Gutenberg