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