n. A termination in many words taken from the Greek or formed of Greek elements, especially words denoting a science or department of knowledge. See the etymology.n. A termination of some nouns of Greek origin (few or none of this kind being newly formed) in which -ology implies ‘a gathering.’ Examples are anthology, a gathering of flowers (distinguished from anthology, the science of flowers, a word of modern formation), and carpology.n. A science the name of which ends in -ology; hence, any science or branch of knowledge.