fronto-

  1. a combining form used in compound words referring to the frontal bone or lobe (frontoparietal) or, in meteorological terms, to a frontal zone (frontogenesis).

Origin of fronto-

Latin front- (stem of frōns) forehead, front + -o-
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018