- (n.) A treatise on petrology.
- (n.) The department of science which is concerned with the mineralogical and chemical composition of rocks, and with their classification: lithology.
Webster's Revised Unabridged Dictionary
| APA | Webster's. (2011). petrology. Retrieved September 25, 2026, from http://smartdefine.org/petrology/definitions/2044423 |
| Chicago | Webster's. 2011. "petrology" http://smartdefine.org/petrology/definitions/2044423 (accessed September 25, 2026). |
| Harvard | Webster's 2011, petrology, Smart Define, viewed 25 September, 2026, <http://smartdefine.org/petrology/definitions/2044423>. |
| MLA | Webster's. "petrology" 27 May 2011. Web. 25 September 2026. <http://smartdefine.org/petrology/definitions/2044423> |