[pi-trol-uh-jee] /pɪˈtrɒl ə dʒi/

the scientific study of rocks, including petrography and petrogenesis.
noun (pl) -gies
the study of the composition, origin, structure, and formation of rocks petrol

1811 (erroneously as petralogy), from petro- (1) “rock” + -ology.
The scientific study of the origin, composition, and structure of rocks.


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