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