polyploidogenic,a.Cytology.|ˌpɒlɪplɔɪdəˈdʒɛnɪk| [f. as prec. + -o + -genic.] Tending to produce polyploidy. 1944[see dibenzanthracene].1974Biol.Abstr. LVII. 3982/2 In the sprouts there appear morphological changes (tumor-like thickenings in some parts) similar to those evoked by polyploidogenic substances.