Hydrate 3 : A substance containing water combined in the molecular form (such as CaSO4 2H20). A crystalline substance containing water of crystallization. (Bul 10C, Bul D11)
The Mudblogger (Oilfield, Energy and Related Photographs), Oil Field Glossary, TX, USA 2014. http://mudblogger.com/oilfield-glossary/, (Oil - Amer) {777}