Quantcast
Merriam-Webster Logo
  • Dictionary
  • Thesaurus
  • Medical
  • Scrabble
  • Spanish Central
  • Learner's Dictionary

petrology

play
noun pe·trol·o·gy \pə-ˈträ-lə-jē, pe-\

Definition of petrology

  1. :  a science that deals with the origin, history, occurrence, structure, chemical composition, and classification of rocks

petrologic play \ˌpe-trə-ˈlä-jik\ or petrological play \-ji-kəl\ adjective
petrologically play \-ji-k(ə-)lē\ adverb
petrologist play \pə-ˈträ-lə-jist, pe-\ noun


Origin of petrology

International Scientific Vocabulary


First Known Use: 1811


Learn More about petrology


Seen and Heard

What made you want to look up petrology? Please tell us where you read or heard it (including the quote, if possible).

WORD OF THE DAY

to work hard

Get Word of the Day daily email!

WORD GAMES

Take a 3-minute break and test your skills!

image567572573

Which of these is a synonym of unctuous?

prompt oily maudlin angry
Name That Thing

Test your visual vocabulary with our 10-question challenge!

TAKE THE QUIZ
SCRABBLE® Sprint

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ