hydrationn.
/hʌɪˈdreɪʃən/ The action of hydrating or condition of being hydrated; combination with water.
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hydration1854
hydratation1876
1854 J. Scoffern in Orr's Circle Sci. 452 In both conditions of hydration the crystals of sulphate of nickel are very beautiful.
1876 J. Fowler in Archaeologia 46 128 (note) The hydration of lime in badly tempered mortar.
1878 C. T. Kingzett Animal Chem. iii. 36 The chemical decompositions for ever occurring in the living body are all included in two processes, viz., those of hydration and oxidation.
1880 H. E. Armstrong Introd. Study Org. Chem. (ed. 2) 190 (note) Decompositions like those of starch into dextrose, of cane-sugar into dextrose and levulose..which involve the fixation of the elements of water, may all be said to be the result of hydrolysis, and those substances which, like sulphuric acid, diastase, emulsin, etc., induce hydrolysis, may be termed hydrolytic agents or hydrolysts. The substance hydrolysed is the hydrolyte. The mere fixation of the elements of water unaccompanied by decomposition..may be termed hydration in contradistinction.
1889 H. F. Morley & M. M. P. Muir Watts' Dict. Chem. (rev. ed.) II. 703/2 Another form of words..is to speak of water of hydration, or water of crystallisation and to contrast these with water of constitution.
This entry has not yet been fully updated (first published 1899; most recently modified version published online March 2022).
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