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geochronology

[jee-oh-kruh-nol-uh-jee]
noun
  1. the chronology of the earth, as based on both absolute and relative methods of age determination.
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Origin of geochronology

First recorded in 1890–95; geo- + chronology
Related formsge·o·chron·o·log·ic [jee-oh-kron-l-oj-ik] /ˌdʒi oʊˌkrɒn lˈɒdʒ ɪk/, ge·o·chron·o·log·i·cal, adjectivege·o·chro·nol·o·gist, noun
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for geochronology

geochronology

noun
  1. the branch of geology concerned with ordering and dating of events in the earth's history, including the origin of the earth itself
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Derived Formsgeochronological (ˌdʒiːəʊˌkrɒnəˈlɒdʒɪkəl), adjective
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for geochronology

n.

1893, from geo- + chronology.

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Online Etymology Dictionary, © 2010 Douglas Harper