Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

English definition of “geology”


noun [U]     /dʒiˈɒlədʒi/
the study of rocks and soil and the physical structure of the EarthGeology - general words
geological     /ˌdʒiːəʊˈlɒdʒɪkəl/ adjective geologist noun [C] someone who studies geologyOccupations and trades
(Definition of geology noun from the Cambridge Learner's Dictionary © Cambridge University Press)

Definitions of “geology” in other dictionaries

Word of the Day


the quality of knowing someone very well, liking them a lot, and wanting to spend a lot of time together

Word of the Day


Read our blog about how the English language behaves.

Learn More

New Words

Find words and meanings that have just started to be used in English, and let us know what you think of them.

Learn More