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fronto-

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  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).
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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