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