Definition of keratinous in English:

keratinous

adjective

Biology
  • Containing or made from keratin.

    • ‘The wing spurs are keratinous structures that grow anteriorly from the carpal-metacarpal joints.’
    • ‘In addition to the tubules, the epithelial cells may also form nests, cords, single cells, micropapillae, and keratinous cysts.’
    • ‘Strictly, the exoskeleton is restricted to keratinous elements such as horns, nails, claws, hairs, feathers, etc.’
    • ‘A punch biopsy of an alopecic patch on his scalp showed pigment casts with keratinous debris in the follicles, distortion of the hair shafts, and an increased number of catagen hairs.’
    • ‘In both skin and hair care products, the liberated carbon dioxide also functions to facilitate the delivery of active or functional substances to keratinous substrates, such as skin and hair.’

Pronunciation

keratinous

/kəˈratɪnəs/