digenetic UK /dʌɪ.dʒɪˈnɛt.ɪk/US /daɪ.d͡ʒəˈnɛt.ɪk/ adjective1 •Of or relating to a subclass (Digenea) of trematode worms in which sexual reproduction as an internal parasite of a vertebrate alternates with asexual reproduction in a mollusk.