Definition of petrologic in US English:

petrologic

adjective

  • See petrology

    • ‘Paleomagnetic studies imply 15 to 18 degrees of northward translation of the Valle Group since its deposition, but paleontologic and petrologic studies do not support this contention.’
    • ‘Is there any petrologic or petrographic evidence that granitic magmas have been extracted in timescales of only decades or centuries?’
    • ‘However, petrologic ground thin-sections proved to be superior to the peels for showing the fine wall details of xylem parenchyma and tracheary cells.’

Pronunciation

petrologic

/ˌpetrəˈläjik/