frontal index

frontal index

[¦frənt·əl ′in‚deks]
(anthropology)
The ratio of the least to the greatest breadth of the forehead multiplied by 100.
References in periodicals archive ?
In addition, we determined the frontal index size: the ratio of frontal spinal canal size to the frontal size of vertebral body at L1-L5.
Frons slightly convergent dorsally, frontal index (width of frons just below anterior ocellus/ width of head) 0.
Frons parallel-sided, frontal index (width of frons just below anterior ocellus/ width of head) 0.