Petro definition

petrō, petrə
Rock; stone.

Petroglyph.

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Petroleum.

Petrochemistry.

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Rock or stone.

Petrography.

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Petroleum.

Petrochemical.

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Of or relating to the petroleum business.

Petrodollars, petropolitics.

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Origin of petro

  • < Gr petra, rock, or petros, stone

    From Webster's New World College Dictionary, 5th Edition

  • Greek from petros stone per-2 in Indo-European roots

    From American Heritage Dictionary of the English Language, 5th Edition