cephalic index

noun

Definition of cephalic index 

: the ratio multiplied by 100 of the maximum breadth from side to side of the head to its maximum length from front to back in living individuals — compare cranial index

First Known Use of cephalic index

1866, in the meaning defined above

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The first known use of cephalic index was in 1866

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cephalic index

noun

Medical Definition of cephalic index 

: the ratio multiplied by 100 of the maximum breadth of the head to its maximum length — compare cranial index

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