Here's what rhymes with panchromatic.
chromatic climatic somatic traumatic rheumatic achromatic dramatic static aromatic emphatic pancreatic thematic erratic lymphatic pneumatic asthmatic fanatic monochromatic automatic hepatic dogmatic pragmatic schematic charismatic prostatic aliphatic emblematic kinematic operatic prismatic programmatic diagrammatic magmatic phlegmatic spermatic zygomatic acrobatic schismatic undramatic aerobatic diplomatic problematic ecstatic enigmatic enzymatic axiomatic cinematic idiomatic muriatic posttraumatic epigrammatic numismatic stigmatic nondramatic unemphatic democratic systematic symptomatic autocratic metastatic melodramatic psychosomatic diaphragmatic homeostatic intrahepatic orthostatic theocratic astigmatic thermostatic photostatic undiplomatic bureaucratic asymptomatic electrostatic hydrostatic paradigmatic technocratic undemocratic unproblematic unsystematic antidemocratic meritocratic plutocratic semiautomatic unidiomatic homoeostatic aristocratic idiosyncratic nondemocratic Words that almost rhyme with panchromatic
magic nomadic tragic sporadic pelagic syllabic apparatchik priapic monosyllabic disyllabic polysyllabic 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 anticlimactic ataxic botanic baldric psychiatric inorganic scholastic volcanic barbaric neoplastic pediatric sarcastic thermodynamic ecclesiastic geriatric nostalgic ophthalmic presynaptic anaphylactic angiographic heraldic tomographic isobaric paediatric calligraphic neoclassic phonographic nonelastic demographic enthusiastic geographic photographic ethnographic prophylactic chromatographic hemodynamic hydrodynamic postsynaptic psychodynamic telegraphic topographic transatlantic cartographic holographic intrathoracic lithographic orthographic psychopathic splanchnic thermoplastic nonmetallic oceanographic biographic choreographic osteopathic periphrastic sycophantic transoceanic xerographic hypothalamic radiographic endoplasmic pornographic hyperplastic hypoplastic iconoclastic iconographic protoplasmic viscoelastic stenographic typographic intergalactic seismographic cytoplasmic bibliographic stratigraphic unenthusiastic autobiographic interscholastic overenthusiastic crystallographic lexicographic cinematographic electrocardiographic electroencephalographic