PETROLOGY
Meaning of PETROLOGY in English
/ pəˈtrɒlədʒi; NAmE -ˈtrɑːl-/ noun
[ U ] the scientific study of how rocks are made and what they are made of
Oxford Advanced Learner's English Dictionary.
Оксфордский английский словарь для изучающик язык на продвинутом уровне.
2005