Definition of 'cephalization'
noun
(in the evolution of animals) development of a head by the concentration of feeding and sensory organs and nervous tissue at the anterior end
Collins English Dictionary. Copyright © HarperCollins Publishers
noun
the tendency in the evolution of animal life for sensory organs, the nervous system, etc. to become
centralized in or near the head
Webster’s New World College Dictionary, 4th Edition. Copyright © 2010 by
Houghton Mifflin Harcourt. All rights reserved.
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