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