Longman Dictionary of Contemporary English - ology

also -logy ~ suffix in nouns 1 the scientific study of something  (geology (=the study of rocks and the Earth) | climatology (=the study of climate) | Egyptology (=the study of ancient Egypt)) 2 informal something that is done or talked about as though it was a scientific study  (futurology (=the practice of trying to say how the future will develop)) 3 the things studied by a particular science  (The geology of north Devon is particularly interesting.) - -ological suffix - -ologically suffix (in adverbs)  (geologically interesting)