From Longman Dictionary of Contemporary Englishepistemologye‧pis‧te‧mol‧o‧gy /ɪˌpɪstəˈmɒlədʒi $ -ˈmɑː-/ noun [uncountable] the part of philosophy that deals with how we know things, how firmly we can know things etc —epistemological /ɪˌpɪstəməˈlɒdʒɪkəl $ -ˈlɑː-/ adjective