petrography

1 of 2

noun (1)

: the description and systematic classification of rocks

petrographer

2 of 2

noun (2)

plural -s
: a specialist in petrography

Word History

Etymology

Noun (1)

petro- + -graphy

Noun (2)

petrography + -er

First Known Use

Noun (1)

1651, in the meaning defined above

Time Traveler
The first known use of petrography was in 1651

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Cite this Entry

“Petrography.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/petrography. Accessed 8 Jul. 2026.

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