bigenerBot.|ˈbaɪdʒɪnə(r)| [a. L. bigener, f.bi- two + gener- (nom.genus) kind.] A cross or hybrid between two genera. 1835Lindley Introd.Bot. (1848) II. 242 Bigeners, that is to say mules between different genera.1883Nature XXVII. 570 A true bigener.