petro-
Crude oil prefix
Petro- is a combining form meaning rock or petroleum.
The rock sense appears in scientific terms: petroglyph (rock carving), petrography (rock description).
The petroleum sense dominates modern usage: petrochemical, petrodollar, petrostate.
Context usually makes clear which meaning applies—geology versus oil industry.
fossil-fuels
Revenue from crude exports
- petrostateCountry reliant on petroleum
- petrochemistryStudy of petroleum compounds
- petrolatumSemisolid hydrocarbon mixture
geology
Scientific rock classification
- petrologyScientific study of rocks
- petrologistScientist studying rock composition
- petrographicConcerning rock composition study
petrodollar
Revenue from crude exports
- petrostateCountry reliant on petroleum
- petrochemistryStudy of petroleum compounds
- petrolatumSemisolid hydrocarbon mixture
petrography
Scientific rock classification
- petrologyScientific study of rocks
- petrologistScientist studying rock composition
- petrographicConcerning rock composition study
- petrol bombsFuel-filled bottle weapons
- petroleum jellySemi-solid hydrocarbon moisturizer
- petrol stationVehicle refueling facility
- petrified woodMineralized tree fossils
- petrol pumpFuel-dispensing station machine
- petrified forestsTrees mineralized over millennia
petrol, petroleum, petrochemical, petrochemicals, petrify, petrified, petrification, petroglyph, petroglyphs