cephalization

noun
ceph·a·li·za·tion | \ ˌse-fə-lə-ˈzā-shən \

Definition of cephalization 

: a tendency in the evolution of organisms to concentrate the sensory and neural organs in an anterior head

First Known Use of cephalization

1864, in the meaning defined above

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The first known use of cephalization was in 1864

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cephalization

noun
ceph·a·li·za·tion
variants: or British cephalisation \ˌsef-ə-lə-ˈzā-shən \

Medical Definition of cephalization 

: an evolutionary tendency to specialization of the body with concentration of sensory and neural organs in an anterior head

More from Merriam-Webster on cephalization

Britannica.com: Encyclopedia article about cephalization

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