water of hydration

water of hydration
the portion of a hydrate that is represented as, or can be expelled as, water: now usually regarded as being in true molecular combination with the other atoms of the compound, and not existing in the compound as water.
[1885-90]

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Universalium. 2010.

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  • Water of hydration — Hydration Hy*dra tion, n. (Chem.) The act of becoming, or state of being, a hydrate. [1913 Webster] {Water of hydration} (Chem.), water chemically combined with some substance to form a hydrate; distinguished from {water of crystallization}.… …   The Collaborative International Dictionary of English

  • water of hydration — n water that is chemically combined with a substance to form a hydrate and can be expelled (as by heating) without essentially altering the composition of the substance …   Medical dictionary

  • water of hydration — n. water which is chemically combined with a substance to form a hydrate and which can be removed, as by heating …   English World dictionary

  • water of hydration — noun the water present in hydrated compounds • Syn: ↑water of crystallization, ↑water of crystallisation • Hypernyms: ↑water, ↑H2O * * * : water that is chemically combined with a substance to form a hydrate and can be expelled (as by heating)… …   Useful english dictionary

  • water of hydration — noun that portion of a hydrate which is represented as, or can be driven off as, water, now usually regarded as being in true molecular combination with the other atoms of the compound, and not existing in the compound as water …  

  • water of hydration — Date: circa 1889 water that is chemically combined with a substance to form a hydrate and can be expelled (as by heating) without essentially altering the composition of the substance …   New Collegiate Dictionary

  • Hydration — Hy*dra tion, n. (Chem.) The act of becoming, or state of being, a hydrate. [1913 Webster] {Water of hydration} (Chem.), water chemically combined with some substance to form a hydrate; distinguished from {water of crystallization}. [1913 Webster] …   The Collaborative International Dictionary of English

  • water of crystallization — n water of hydration present in many crystallized substances that is usu. essential for maintenance of a particular crystal structure * * * water that is chemically combined in many salts; it forms a structural part of the crystal but can be… …   Medical dictionary

  • water of constitution — water so combined in a molecule that it cannot be removed without disrupting the entire molecule distinguished from water of hydration * * * Chem. water present in a molecule that cannot be removed without disrupting the molecule. [1885 90] …   Useful english dictionary

  • water of dehydration — water of hydration set free by chemical changes …   Useful english dictionary

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