noun
- A chemical compound that contains one molecule of water for every two molecules of the main substance.
Usage: chemistry; technical
Examples
- Calcium sulfate hemihydrate is commonly known as plaster of Paris.
- The hemihydrate form of the mineral has different properties than the fully hydrated version.
- When heated, the dihydrate converts to a hemihydrate by losing half its water content.
- Hemihydrates are important in construction materials and pharmaceutical formulations.