Noun
the body of ideas that determine the knowledge that is intellectually certain at any particular time
Source: WordNetFoucault argues that these conditions of discourse have changed over time, from one period's episteme to another.sfn Although designed for a specialist audience, the work gained media attention, becoming a surprise bestseller in France. Source: Internet
This verb seems to be the most appropriate in terms of describing the "episteme" in one of the modern European languages, hence the German name "Erkenntnistheorie." Source: Internet