Wordiyopetr
GreekVariants
petrpetro
Related Roots
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About This Root
From Greek petra (rock, stone). Petroleum is literally 'rock oil' (petra + oleum). Petrify means 'turn to stone' — both literally (fossil formation) and figuratively (frozen with fear). Petrology is the study of rocks. The proper name Peter also means 'rock,' as named in the New Testament.
Associated Words
petrifaction
The process of turning organic matter into stone; the state of being petrified
TOEFLC2
petrify
To turn to stone; to paralyze with fear
TOEFLGREA1
petroglyph
A prehistoric rock carving or drawing
GREC2
petrol
Refined petroleum fuel used in motor vehicles; gasoline
IELTSA2
petroleum
A naturally occurring flammable liquid consisting mainly of hydrocarbons; crude oil
IELTSTOEFLGRE
petrology
The scientific study of rocks and their origin, composition, and structure
GREC2