cephalization

noun

ceph·​a·​li·​za·​tion ˌse-fə-lə-ˈzā-shən 

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

Word History

First Known Use

1864, in the meaning defined above

Medical Definition

cephalization

noun

ceph·​a·​li·​za·​tion

variants or British cephalisation

ˌsef-ə-lə-ˈzā-shən 

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