petrologyPronunciation: /pɪˈtrɒlədʒi/Definition of petrology noun [mass noun] the branch of science concerned with the origin, structure, and composition of rocks. Compare with lithology.Derivatives petrologicPronunciation: /pɛtrəˈlɒdʒɪk/ adjective petrologicalPronunciation: /pɛtrəˈlɒdʒɪk(ə)l/ adjective petrologist noun petrology in other Oxford dictionaries Definition of petrology in the US English dictionary
