[ras-uh-muh-zey-shuhn, rey-see-muh-]
noun Chemistry.
the conversion of an optically active substance into an optically inactive mixture of equal amounts of the dextrorotatory and levorotatory forms.

1890–95; raceme + -ization

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World English Dictionary
racemize or racemise (ˈræsɪˌmaɪz)
to change or cause to change into a racemic mixture
racemise or racemise
racemi'zation or racemise
racemi'sation or racemise

Collins English Dictionary - Complete & Unabridged 10th Edition
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American Heritage
Medical Dictionary

racemization ra·ce·mi·za·tion (rā'sə-mĭ-zā'shən, rās'ə-)
Conversion of an optically active substance to a raceme.

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
Another risk involves changes in the structure of amino acids, a kind of spontaneous twisting known as racemization.
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