The collagen of bones, used for glues and gelatin, derived by dissolving the mineral content in an acid solution.
- ‘The plant will have the licenced capacity to process 13,000 tonnes of crushed animal bones into 3000 tonnes of ossein and 6000 tonnes of dicalcium phosphate.’
- ‘Colla cornus cervi, which contains a large amount of ossein and Ca. + +, plays an important role in preventing bone destruction.’
Mid 19th century: from Latin osseus bony + -in.