'Fronto-' definitions:

Definition of 'Fronto-'

From: GCIDE

Fronto- \Fron"to-\ [L. frons, frontis, the forehead.] (Anat.) A combining form signifying relating to the forehead or the frontal bone; as, fronto-parietal, relating to the frontal and the parietal bones; fronto-nasal, etc. [1913 Webster]