# petrology

> English word · Noun · IPA /pɪˈtɹɒl.ə.d͡ʒi/ · frequency rank #82,658

## Definitions
1. The study of the origin, composition and structure of rock.

## Etymology
From petro- + -logy.

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/word/petrology