encephalization

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en·ceph·a·li·za·tion

(ĕn-sĕf′ə-lĭ-zā′shən)
n.
Increase in the ratio of brain mass to body mass during the evolution of a species or other taxonomic group. Higher degrees of encephalization are generally correlated with higher degrees of intelligence.
en·ceph′a·lize v.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
References in periodicals archive ?
Previous research provided a rough idea of the animal's encephalisation, or the brain size relative to body size.
Tiny 20-million-year-old skull sheds new light on evolution of human brain; New study shows the internal structures of primate brains may not have grown proportionately larger as brain size evolved
Importantly, these societal and cultural characteristics are linked with brain size and brain expansion also known as encephalisation, the researchers said, in the paper published in the journal Nature Ecology and Evolution.
Whales and dolphins have complex relationships
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