functional specialization of the brain, with some skills, as language, occurring primarily in the left hemisphere and others, as the perception of visual and spatial relationships, occurring primarily in the right hemisphere.

1885–90; lateral + -ization Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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American Heritage
Medical Dictionary

lateralization lat·er·al·i·za·tion (lāt'ər-ə-lĭ-zā'shən)
Localization of function attributed to either the right or left side of the brain.

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 lateralization
Lateralization also allows for rapid and abrupt frequency changes.
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