Here's what rhymes with pseudomosaicism.
                        
                        
                    
                                schism  sophism  prism  aphorism  holism  chrism  socialism  heroism  mysticism  cynicism  egoism  fatalism  narcissism  pacifism  chauvinism  exorcism  favoritism  fetishism  heathenism  shamanism  stoicism  favouritism  mesmerism  racialism  solecism  mechanism  feminism  terrorism  activism  dualism  fanaticism  modernism  pessimism  scepticism  classicism  egotism  eroticism  nihilism  paganism  agnosticism  anarchism  animism  behaviorism  commercialism  elitism  euphemism  hedonism  lyricism  mannerism  monasticism  nepotism  ostracism  plagiarism  archaism  isomerism  solipsism  synergism  witticism  futurism  galvanism  purism  specialism  tokenism  tropism  criticism  organism  nationalism  antagonism  conservatism  despotism  journalism  optimism  skepticism  symbolism  altruism  barbarism  dynamism  embolism  empiricism  federalism  feudalism  formalism  humanism  magnetism  naturalism  positivism  rheumatism  anachronism  catechism  consumerism  militarism  paternalism  separatism  aneurism  emotionalism  hypnotism  isolationism  legalism  parasitism  pauperism  recidivism  revisionism  abolitionism  albinism  automatism  botulism  exoticism  negativism  neutralism  parochialism  perfectionism  revivalism  anabolism  bimetallism  creationism  monetarism  mongolism  metabolism  communism  patriotism  alcoholism  colonialism  liberalism  pluralism  determinism  parallelism  pragmatism  rationalism  relativism  romanticism  unionism  absolutism  cannibalism  collectivism  dogmatism  evangelism  hyperthyroidism  hypothyroidism  protectionism  regionalism  secularism  centralism  factionalism  functionalism  populism  scholasticism  voluntarism  cretinism  impressionism  sectionalism  capitalism  imperialism  materialism  professionalism  radicalism  bilingualism  fundamentalism  internationalism  postmodernism  antisemitism  astigmatism  corporatism  eclecticism  expansionism  mercantilism  provincialism  sensationalism  sentimentalism  traditionalism  ecumenism  exhibitionism  expressionism  proselytism  puritanism  syndicalism  individualism  industrialism  republicanism  microorganism  sectarianism  clericalism  gradualism  interventionism  somnambulism  authoritarianism  utilitarianism  existentialism  intellectualism  anticommunism  evangelicalism  totalitarianism  cosmopolitanism  egalitarianism  environmentalism  humanitarianism  transcendentalism  constitutionalism  electromagnetism  Words that almost rhyme with pseudomosaicism
vision  rhythm  arisen  risen  fission  mizzen  given  listen  mission  physician  prison  riven  stiffen  position  addition  decision  division  driven  edition  suspicion  emission  incision  revision  excision  forgiven  omission  derision  fruition  sedition  volition  envision  striven  audition  glisten  rescission  opposition  commission  permission  provision  admission  algorithm  ambition  petition  precision  supervision  collision  submission  ignition  musician  remission  supposition  tuition  apparition  attrition  magician  apposition  imprison  logarithm  logician  prevision  condition  definition  tradition  television  transition  transmission  acquisition  disposition  abolition  coalition  cognition  deposition  exhibition  exposition  inhibition  intuition  nutrition  partition  superstition  clinician  imposition  subdivision  circumcision  erudition  technician  transposition  dentition  indecision  inquisition  paroxysm  patrician  rendition  superposition  disquisition  manumission  rhetorician  superimposition  theoretician  dietitian  ebullition  imprecision  munition  tactician  composition  expedition  proposition  repetition  ammunition  decomposition  politician  prohibition  admonition  demolition  mathematician  preposition  requisition  contrition  indisposition  intermission  interposition  cataclysm  statistician  diagnostician  readmission  competition  recognition  juxtaposition  malnutrition  predisposition  extradition  precondition  presupposition  redefinition  electrician  obstetrician  pediatrician  premonition  academician  serum  theorem  cecum  system  wisdom  victim  fearsome  gingham  kingdom  symptom  dictum  gypsum  winsome  pilgrim  ecosystem