the scientific study of rocks, including petrography and petrogenesis.

Origin of petrology

First recorded in 1805–15; petro-1 + -logy
Related formspet·ro·log·ic [pe-truh-loj-ik] /ˌpɛ trəˈlɒdʒ ɪk/, pet·ro·log·i·cal, adjectivepet·ro·log·i·cal·ly, adverbpe·trol·o·gist, noun Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for petrology

Historical Examples of petrology

British Dictionary definitions for petrology


noun plural -gies

the study of the composition, origin, structure, and formation of rocksAbbreviation: petrol
Derived Formspetrological (ˌpɛtrəˈlɒdʒɪkəl), adjectivepetrologically, adverbpetrologist, noun
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 petrology

1811 (erroneously as petralogy), from petro- (1) "rock" + -ology.

Online Etymology Dictionary, © 2010 Douglas Harper

petrology in Science



The scientific study of the origin, composition, and structure of rocks.
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