Catalan Noun propil m (plural propils) (organic chemistry) propyl Romanian Etymology Borrowed from French propyle. Noun propil m (plural propili) propyl Declension More information singular, plural ... singular plural indefinite definite indefinite definite nominative-accusative propil propilul propili propilii genitive-dative propil propilului propili propililor vocative propilule propililor Close Wikiwand - on Seamless Wikipedia browsing. On steroids.Remove ads