cephalization

英 [,sefəlaɪ'zeɪʃ(ə)n; ,kef-] 美[,sɛfəlɪ'zeʃən]

cephalization (n.): 1864, coined by U.S. zoologist James D. Dana (1813-1895) from Greek kephale "head" (see cephalo-) on model of specialization, etc.