hemihydrate
/ˌhɛmiˈhaɪdreɪt/
noun
- A chemical compound that contains half a molecule of water of crystallization per molecule of the main substance.
- When the hemihydrate is mixed with water, it rehydrates and hardens into a solid.
- Plaster of Paris is a hemihydrate of calcium sulfate, formed by heating gypsum.
- The chemist identified the white powder as a hemihydrate based on its water content.