Here's what rhymes with photosubstitution.
                        
                        
                    
                                substitution  elution  institution  pollution  dilution  restitution  destitution  ablution  solution  dissolution  diminution  prostitution  attribution  distribution  constitution  evolution  persecution  absolution  devolution  involution  locution  antipollution  lilliputian  execution  resolution  revolution  prosecution  retribution  elocution  irresolution  contribution  redistribution  convolution  reconstitution  circumlocution  electrocution  counterrevolution  Words that almost rhyme with photosubstitution
illusion  proven  delusion  loosen  twosome  diffusion  fusion  allusion  intrusion  effusion  mucin  inclusion  infusion  occlusion  perfusion  collusion  seclusion  extrusion  gruesome  protrusion  contusion  disillusion  unproven  suffusion  obtrusion  preclusion  unloosen  exclusion  profusion  conclusion  confusion  reperfusion  transfusion  malocclusion  bitumen  ruin  lumen  illumine  neuen  rumen  newton  lupin  human  union  gluten  cumin  crewman  soupcon  albumin  inhuman  reunion  acumen  disunion  subhuman  superhuman  groomsmen  communion  nonhuman  nonunion