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