Here's what rhymes with ionogenic.
antigenic splenic biogenic eugenic neurogenic phrenic allergenic irenic pathogenic psychogenic pyogenic photogenic carcinogenic transgenic cryogenic mutagenic androgenic hypoallergenic telegenic anthropogenic iatrogenic teratogenic neurasthenic calisthenic callisthenic schizophrenic hallucinogenic Words that almost rhyme with ionogenic
totemic pfennig academic endemic polemic epidemic systemic ischemic pandemic leukaemic epistemic nonacademic technic benthic derrick poetic pelvic ferric relic peptic eutectic steric medic fetich pectic unauthentic genetic authentic energetic generic acetic majestic metric pathetic angelic ascetic forensic numeric septic centric cleric enteric hectic allelic emetic sceptic turmeric inauthentic bathetic domestic magnetic aesthetic kinetic prophetic anesthetic athletic diabetic esoteric esthetic phonetic alphabetic anaesthetic apathetic aseptic diuretic monomeric skeptic tartaric anorexic chimeric dietetic geodesic geodetic hermetic hysteric acerbic anorectic antithetic homiletic lovesick polytechnic pyrotechnic gametic paregoric redbrick unaesthetic copacetic electric atmospheric synthetic dialectic dielectric eccentric geometric symmetric antiseptic apologetic cosmetic eclectic epileptic mesenteric obstetric prosthetic cybernetic egocentric empathetic ethnocentric frenetic isomeric neuroleptic ontogenetic psychedelic apoplectic dyslexic dyspeptic geocentric ionospheric evangelic paramedic splenetic diametric parenthetic exegetic nonathletic phrenetic dyslectic sympathetic arithmetic asymmetric concentric parametric econometric isometric psychometric antidiuretic barometric kinesthetic photometric alphanumeric antipathetic cataleptic nonmagnetic paraplegic thermometric unapologetic nonelectric unesthetic cliometric volumetric photoelectric photosynthetic phylogenetic unsympathetic biosynthetic colorimetric geomagnetic isoelectric paramagnetic anthropocentric peripatetic radiometric onomatopoetic narcoleptic telekinetic psychokinetic ferromagnetic nonparametric pharmacokinetic stoichiometric heliocentric hydroelectric piezoelectric trigonometric parasympathetic electromagnetic