pe·​trog·​ra·​phy pə-ˈträ-grə-fē How to pronounce petrography (audio)
: the description and systematic classification of rocks
petrographer noun
petrographic adjective
or petrographical
petrographically adverb

Word History


petro- + -graphy

First Known Use

1651, in the meaning defined above

Time Traveler
The first known use of petrography was in 1651

Dictionary Entries Near petrography

Cite this Entry

“Petrography.” Dictionary, Merriam-Webster, Accessed 22 May. 2024.

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