What does "petrology" mean?

The study of the origin, composition and structure of rock.

How do you pronounce "petrology"?

Pronounced //pəˈtɹɑl.ə.d͡ʒi//.

Common synonyms include: crystallography, geology, geology subfield, lithology, mineralogy, rock analysis.

/pəˈtɹɑl.ə.d͡ʒi/ noun

noun ·Rare ·Advanced level

Noun

1
The study of the origin, composition and structure of rock. uncountable, usually
2
the branch of geology that studies rocks: their origin and formation and mineral composition and classification wordnet

"Geology is divided into various branches such as mineralogy, petrology, and physical geology."

From petro- + -logy.