[ 'kɛrətɪn ]
■ noun any of a group of fibrous proteins forming the main structural constituent of hair, nails, feathers, hoofs, claws, and horns.
Derivatives
~ous adjective
Origin
C19: from Gk keras , kerat- 'horn' + -in 1 .
[ 'kɛrətɪn ]
■ noun any of a group of fibrous proteins forming the main structural constituent of hair, nails, feathers, hoofs, claws, and horns.
Derivatives
~ous adjective
Origin
C19: from Gk keras , kerat- 'horn' + -in 1 .
Concise Oxford English vocab. Сжатый оксфордский словарь английского языка. 2004