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