"refine" in German to refine raffinieren weiterentwickeln Detailed translations for "refine" to refine 1. technology, raw materials to refine raffinieren{transitive verb} The second step toward making America less dependant on foreign oil is to produce and refine more Source: opensubtitles.org Corpus by OPUS Request review produzieren und zu raffinieren auf umweltfreundliche und schonende Art und Weise. 2. other to refine(also: to refine sth., to develop further) weiterentwickeln{transitive verb}