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English definition of “geology”

geology

noun [U]  /dʒiˈɑl·ə·dʒi/ us  
earth science the study of the rocks and physical processes of the earth in order to understand its origin and history
geological
adjective [not gradable]  /ˌdʒi·əˈlɑdʒ·ɪ·kəl/ (also geologic,    /ˌdʒi·əˈlɑdʒ·ɪk/) us  
a geological survey
(Definition of geology from the Cambridge Academic Content Dictionary © Cambridge University Press)
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