verb (used with object), verb (used without object), keratinized, keratinizing.
to make or become keratinous.
Also, especially British, keratinise.

1895–1900; keratin + -ize

keratinization, noun Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
keratinize or keratinise (kɪˈrætɪˌnaɪz, ˈkɛrətɪ-, kɪˈrætɪˌnaɪz, ˈkɛrətɪ-)
to become or cause to become impregnated with keratin
keratinise or keratinise
keratini'zation or keratinise
keratini'sation or keratinise

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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American Heritage
Medical Dictionary

keratinization ker·a·tin·i·za·tion (kěr'ə-tn-ĭ-zā'shən)
The conversion of squamous epithelial cells into a horny material, such as nails. Also called cornification.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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Example sentences for keratinization
This process is called keratinization and takes place within weeks.
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