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