/ ˈkerətɪn; NAmE / noun
[ U ] ( biology ) a protein that forms hair, feathers, horns, hoofs , etc.
••
WORD ORIGIN
mid 19th cent.: from Greek keras , kerat- horn + -in .
/ ˈkerətɪn; NAmE / noun
[ U ] ( biology ) a protein that forms hair, feathers, horns, hoofs , etc.
••
WORD ORIGIN
mid 19th cent.: from Greek keras , kerat- horn + -in .
Oxford Advanced Learner's English Dictionary. Оксфордский английский словарь для изучающик язык на продвинутом уровне. 2005