Meaning of petro

pet•ro

Pronunciation: (pe'trō), [key]
—n.
  1. the federally owned petroleum industry.

petro-

Pronunciation: [key]
  1. a combining form meaning “rock,” “stone,” used in the formation of compound words: petrology.

petro-

Pronunciation: [key]
  1. a combining form meaning “petroleum,” “the extraction and export of petroleum,” used in the formation of compound words: petrochemistry; petropower.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.