radiogenicPronunciation: /ˌreɪdɪə(ʊ)ˈdʒɛnɪk, -ˈdʒiːn-/Definition of radiogenic adjective 1produced by radioactivity:a radiogenic isotope 2well suited in style or subject for broadcasting by radio:a radiogenic seriesDerivatives radiogenically adverb radiogenic in other Oxford dictionaries Definition of radiogenic in the US English dictionary