Breadcrumb Home > Thesaurus > K Synonyms of keratin Find synonyms for: Noun 1. keratin, ceratin, scleroprotein, albuminoid usage: a fibrous scleroprotein that occurs in the outer layer of the skin and in horny tissues such as hair, feathers, nails, and hooves WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved.Definition and meaning of keratin (Dictionary) TrendingHere are the facts and trivia that people are buzzing about. Hanukkah Origins of the Christmas Holiday Jewish Holidays, 2010-2030 (A.M. 5770-5791) Western Christian Holidays, 2010-2030 Krampus: The Christmas Devil Kwanzaa ✖ Related Content Daily Word Quiz: anomie Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language