Definition of petro- combining form from the Oxford Advanced American Dictionary

     

    petro-

     combining form
    combining form
    NAmE//ˈpɛtroʊ//
     
     
    jump to other results
  1. 1(in nouns, adjectives, and adverbs)
  2. 2connected with rocks petrology
  3. 3 connected with gas petrochemical
See the Oxford Advanced Learner's Dictionary entry: petro-