Definition of geochronology
1 : the chronology of the past as indicated by geologic data
2 : the study of geochronology
geochronologicallyplay \ˌjē-ō-ˌkrä-nə-ˈlä-ji-k(ə-)lē, -ˌkrō-\ adverb
geochronologistplay \ˌjē-ō-krə-ˈnä-lə-jist\ noun
First Known Use of geochronology
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