keratinous
/kəˈrætɪnəs/
adjective
- Made of or resembling keratin, the protein that forms hair, nails, horns, and the outer layer of skin.
- The rhinoceros horn is a keratinous structure, similar to human fingernails.
- The doctor explained that the growth was a harmless keratinous cyst.
- Birds' feathers are keratinous and help them fly and stay warm.
Synonyms