petrography

noun

pe·trog·ra·phy pə-ˈträ-grə-fē

pe-

: the description and systematic classification of rocks

petrographer

pə-ˈträ-grə-fər

pe-

noun

petrographic

ˌpe-trə-ˈgra-fik

adjective

or petrographical

ˌpe-trə-ˈgra-fi-kəl

petrographically

ˌpe-trə-ˈgra-fi-k(ə-)lē

adverb

Word History

Etymology

petro- + -graphy

First Known Use

1651, in the meaning defined above

Time Traveler

The first known use of petrography was in 1651

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Style

“Petrography.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/petrography. Accessed 1 Jul. 2025.

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petrography

noun

Word History

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