Here's what rhymes with metachromatic.
chromatic achromatic climatic somatic traumatic rheumatic panchromatic dramatic static aromatic emphatic thematic erratic lymphatic pneumatic asthmatic fanatic programmatic acrobatic epigrammatic automatic diplomatic hepatic problematic dogmatic pancreatic pragmatic schematic charismatic prostatic aliphatic axiomatic kinematic monochromatic operatic prismatic diagrammatic magmatic phlegmatic spermatic zygomatic schismatic aerobatic ecstatic enigmatic enzymatic cinematic emblematic melodramatic idiomatic muriatic posttraumatic stigmatic undramatic unemphatic democratic systematic bureaucratic autocratic metastatic psychosomatic diaphragmatic homeostatic orthostatic technocratic theocratic unproblematic astigmatic numismatic thermostatic nondramatic photostatic undiplomatic aristocratic symptomatic electrostatic hydrostatic paradigmatic intrahepatic undemocratic antidemocratic meritocratic plutocratic semiautomatic unidiomatic asymptomatic idiosyncratic unsystematic nondemocratic homoeostatic Words that almost rhyme with metachromatic
magic nomadic tragic sporadic pelagic syllabic apparatchik priapic disyllabic polysyllabic monosyllabic romantic manic mastic panic lactic tactic climactic phallic tannic malefic dynamic organic traffic classic elastic plastic fabric gastric graphic metallic semantic ceramic drastic frantic monastic thoracic catholic dynastic mechanic oceanic synaptic glutamic spastic clastic italic unromantic tyrannic matchstick fantastic gigantic didactic hemorrhagic inelastic stochastic aerodynamic cephalic galactic galvanic messianic panoramic pedantic thalamic tympanic aplastic gymnastic haemorrhagic satanic titanic bimetallic bombastic chiropractic orgiastic slapstick ataxic botanic baldric psychiatric inorganic scholastic volcanic barbaric neoplastic pediatric sarcastic ecclesiastic geriatric nostalgic ophthalmic presynaptic topographic heraldic tomographic isobaric paediatric anticlimactic calligraphic neoclassic phonographic nonelastic demographic enthusiastic geographic photographic ethnographic prophylactic thermodynamic chromatographic hemodynamic hydrodynamic postsynaptic psychodynamic telegraphic anaphylactic angiographic cartographic holographic intrathoracic lithographic orthographic psychopathic splanchnic thermoplastic nonmetallic oceanographic typographic biographic choreographic intergalactic osteopathic periphrastic sycophantic transoceanic xerographic hypothalamic radiographic bibliographic endoplasmic pornographic stratigraphic transatlantic hyperplastic hypoplastic iconoclastic iconographic protoplasmic viscoelastic stenographic interscholastic seismographic cytoplasmic unenthusiastic autobiographic lexicographic overenthusiastic crystallographic cinematographic electrocardiographic electroencephalographic