petr - piez
- petrifaction
- petrifactology
- petrification
- petro bitumen
- petrochemical trend
- petrochemistry
- petrofabric analysis
- petrofabrics
- petrofacies
- petrogenesis
- petrogenetic element
- petrogenetic grid
- petrogenetic model
- petrogenic element
- petrogeochemistry
- petrogeometry
- petrographer
- petrographic geomorphology
- petrographic microscope
- petrographical formation
- petrographical province
- petrography
- petroleum
- petroleum gas
- petroleum geology
- petroleum industry
- petroleum output
- petroleum reservoir
- petroliferous
- petroliferous basin
- petroliferous formation
- petrologen
- petrology
- petromineralogy
- petromorphology
- petrophysics
- petrophytes
- petrosilex
- petrostratigraphy
- petrotectonics
