From Longman Dictionary of Contemporary Englishpolymathpol‧y‧math /ˈpɒlɪmæθ $ ˈpɑː-/ noun [countable] formalKNOW something someone who has a lot of knowledge about many different subjects
Examples from the Corpus
polymath• He is either a polymath or an extremely thorough researcher.• His ebullient personality is a vivid reminder of the polymath of past times.Origin polymath (1600-1700) Greek polymathes “having much knowledge”, from manthanein “to learn” 