Definition of geology
- the geology of Arizona
learning about the geology of Hawaii
These example sentences are selected automatically from various online news sources to reflect current usage of the word 'geology.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.
: a science that studies rocks, layers of soil, etc., in order to learn about the history of the Earth and its life
: the rocks, land, processes of land formation, etc., of a particular area
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