The Collaborative International Dictionary
Petrological
Petrologic \Pet`ro*log"ic\, Petrological \Pet`ro*log"ic*al\, a. Of or pertaining to petrology.
Wiktionary
petrological
a. Of or pertaining to petrology, the study of rock formation and composition
Usage examples of "petrological".
It did Walthers no good to point out that these requirements were mutually contradictory, so it was no surprise to him that when the truck-mounted vibrators did their thing the petrological data were no use at all.
Had Katin been placed on any of them, and blindfold suddenly removed, petrological structure, crystalline formation, and general topography would have identified it for him immediately.