protogenal,a.|prəʊˈtɒdʒɪnəl| [irreg.f.Gr. πρωτογενής: see protogenes + -al1. (A more etymological form would be *protogeneal: cf. next.)] First generated; primitive or primordial as an organism. 1868Owen Vertebr.Anim. III. 817 Sarcode or the ‘Protogenal’ jelly-speck.