keratin
(ˈkɛrətɪn)
[f. Gr. κέρας, κερατ- horn + -in1.]
An organic substance found in horn.
| 1847–9 Todd Cycl. Anat. IV. 169/1 The form in which protein exists in hair, horn, nails, and the epidermis, and called by Simon keratine, has been but imperfectly examined. 1873 C. H. Ralfe Phys. Chem. 43 Keratin..obtained by treating pounded horny matter..with boiling alcohol and ether. |