petr
πέτρα (petra)
means “rock”
Petr means rock. Petroleum is rock oil. Petrified wood has turned to stone.
Words built on petr
- petroleum: 'rock oil' pumped from the ground (petro + leum)
- petrified: turned to stone (or scared stiff) (petri + fied)
- petroglyph: a picture carved into rock (petro + glyph)
The Texas version
Petroleum = Greek petra (rock) + Latin oleum (oil): 'rock oil'. Hello, Spindletop.
Practice it in Skepsis
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