[hahy-drey-tid] /ˈhaɪ dreɪ tɪd/
chemically combined with water in its molecular form.
(of paper pulp) beaten until gelatinous for making into water-resistant paper.
[hahy-dreyt] /ˈhaɪ dreɪt/
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), hydrated, hydrating.
to combine chemically with water.
(of a compound) chemically bonded to water molecules
a chemical compound containing water that is chemically combined with a substance and can usually be expelled without changing the constitution of the substance
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)
(not in technical usage) a chemical compound, such as a carbohydrate, that contains hydrogen and oxygen atoms in the ratio two to one
to undergo or cause to undergo treatment or impregnation with water
1802, “compound of water and another chemical,” from French hydrate, coined c.1800 by French chemist Joseph-Louis Proust (1754-1826) from Greek hydr-, stem of hydor “water” (see water (n.1)).
1850, “to form a hydrate;” 1947 as “to restore moisture;” from Greek hydr-, stem of hydor “water” (see water (n.1)) + -ate (2). Related: Hydrated; hydrating.
hydrate hy·drate (hī’drāt’)
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
Noun A compound produced by combining a substance chemically with water. Many minerals and crystalline substances are hydrates.
noun 1. . noun, Chemistry. 1. a crystalline, water-insoluble powder, Al(OH) 3 or Al 2 O 3 ⋅3H 2 O, obtained chiefly from bauxite: used in the manufacture of glass, ceramics, and printing inks, in dyeing, and in medicine as an antacid and in the treatment of ulcers.
noun 1. . noun 1. a soft, white, crystalline, very slightly water-soluble powder, Ca(OH) 2 , obtained by the action of water on lime: used chiefly in mortars, plasters, and cements. noun 1. another name for calcium hydroxide, esp when made by adding water to calcium oxide
[hahy-dreyt] /ˈhaɪ dreɪt/ 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 […]
hyalitis hy·a·li·tis (hī’ə-lī’tĭs) n. Inflammation of the vitreous humor of the eye in which the inflammatory changes extend into the avascular vitreous from adjacent structures. Also called vitreitis.