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Meaning of cephalization

ceph•a•li•za•tion

Pronunciation: (sef"u-lu-zā'shun), [key]
— n. Zool.
  1. a tendency in the development of animals to localization of important organs or parts in or near the head.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.