GEOLOGY

Detailed explanation-1: -hydrate, any compound containing water in the form of H2O molecules, usually, but not always, with a definite content of water by weight.

Detailed explanation-2: -transitive verb. : to cause to take up or combine with water or the elements of water. : to supply with ample fluid or moisture.

Detailed explanation-3: -Water of hydration is water that is stoichiometrically bound into a crystal. While the water is found within a crystal, it is not directly bonded to a metal cation. Crystal salts containing water of hydration are called hydrates.

Detailed explanation-4: -Definitions of water of hydration. the water present in hydrated compounds. synonyms: water of crystallisation, water of crystallization.