Here's what rhymes with heteroionic.
ionic tonic sonic conic phonic bionic chronic ironic chorionic iconic laconic daemonic avionic embryonic harmonic colonic demonic mnemonic sardonic histrionic platonic polyphonic telephonic hegemonic tectonic supersonic diachronic hypertonic isotonic monotonic planktonic symphonic diatonic subsonic hydroponic infrasonic philharmonic acetonic electronic ultrasonic ganglionic synchronic catatonic monophonic stereophonic pathognomonic quadraphonic quadrophonic architectonic microelectronic Words that almost rhyme with heteroionic
comic atomic genomic autonomic agronomic ergonomic economic anatomic diatomic subatomic taxonomic uneconomic gastronomic astronomic tragicomic socioeconomic macroeconomic microeconomic logic topic folic gothic boric iambic robotic hayrick rollick cosmic periodic toxic aortic chaotic erotic garlic caustic idiotic tropic atopic biotic euphoric formic frolic gnostic karmic meiotic myopic bardic cirrhotic vitriolic seraphic carsick patriotic aquatic exotic neurotic caloric episodic geologic melodic narcotic psychotic parabolic phenolic pyloric semiotic anarchic anoxic cathodic hydrologic lethargic meteoric prosodic bucolic folkloric homoerotic ecologic heartsick rhapsodic strophic allegoric subtopic theosophic chopstick placekick historic symbolic alcoholic metabolic apostolic hydraulic hydrochloric philosophic biologic despotic diastolic hypnotic neurologic pathologic philanthropic systolic ascorbic carbolic etiologic hyperbolic isotopic metaphoric necrotic spasmodic symbiotic synoptic yardstick agnostic anabolic basaltic cathartic dialogic hematologic oligarchic orthodontic pedagogic polymorphic sclerotic telescopic thrombotic demagogic diabolic hierarchic xenophobic acrostic gyroscopic workaholic sophomoric subtropic aetiologic haematologic shambolic chocoholic shopaholic chocaholic horologic diagnostic antibiotic physiologic catastrophic cytotoxic isotropic prognostic endoscopic epidemiologic metamorphic morphologic psychologic melancholic nontoxic peristaltic psychotropic quixotic antarctic arthroscopic unpatriotic misanthropic subarctic macrobiotic nonnarcotic noncaloric gynaecologic astronautic microscopic prehistoric histologic macroscopic immunologic pharmacologic spectroscopic gynecologic stereoscopic fluoroscopic kaleidoscopic microcosmic stroboscopic posthypnotic meteorologic seismologic anisotropic atherosclerotic bacteriologic nonalcoholic submicroscopic electroscopic anthropomorphic antispasmodic