/ Dictionary / Index F fronto-: Meaning and Definition of Find definitions for: fronto- Pronunciation: [key] a combining form used in compound words referring to the frontal bone or lobe (frontoparietal) or, in meteorological terms, to a frontal zone (frontogenesis). Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. front nine front office Related Content Daily Word Quiz: centenary Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language