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Petrified Forest National Park
petrify
Petrine
petro-
petrochemical
petrochemistry
petrodollar
petrogenesis
petroglyph
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petroglyph
pet·ro·glyph [ péttrə glìf ] (plural pet·ro·glyphs)


noun 
Definition:
 
prehistoric rock drawing: a prehistoric drawing done on rock
[Late 19th century. < French pétroglyphe< Greek petros "stone" + glyphē "carving"]
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