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Noun: cephalisation  ,se-fu-lI'zey-shun
Usage: Brit (N. Amer: cephalization)
  1. (biology) the evolutionary trend towards concentration of sensory and neural organs in the head of animals
    "cephalisation is evident in the complex brains of vertebrates";
    - cephalization

Derived forms: cephalisations

Encyclopedia: Cephalisation