1864
: 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
1864
: 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
Merriam Webster Collegiate English Dictionary. Merriam Webster - Энциклопедический словарь английского языка. 2012