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