Here's what rhymes with variolation.
                        
                        
                    
                                relation  nation  duration  oration  aeration  elation  creation  location  station  rotation  alteration  celebration  notation  narration  vocation  donation  relocation  ablation  dilation  evocation  legation  ligation  operation  formation  corporation  radiation  variation  correlation  deviation  elevation  illustration  immigration  inflation  isolation  liberation  migration  realization  revelation  salvation  violation  alienation  allocation  irrigation  irritation  quotation  recreation  simulation  vacation  ventilation  vibration  aviation  causation  cessation  emigration  filtration  insulation  mediation  mutation  negation  ordination  oscillation  probation  realisation  retaliation  retardation  toleration  aberration  adoration  allegation  alternation  appellation  citation  coronation  emulation  escalation  fibrillation  hydration  inhalation  iteration  ovulation  reparation  sedation  summation  ulceration  information  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moderation  modulation  polarization  reformation  replication  starvation  validation  veneration  verification  abbreviation  automation  castration  damnation  dehydration  demarcation  deportation  elongation  exaltation  exhortation  exportation  gestation  inauguration  innervation  intimation  invocation  perforation  recitation  reclamation  refutation  renovation  revocation  stipulation  usurpation  visitation  organization  population  explanation  civilization  evaluation  observation  publication  activation  adaptation  calculation  cultivation  exploitation  organisation  preservation  acceleration  appropriation  collaboration  coordination  degradation  depreciation  designation  destination  deterioration  dissertation  domination  elimination  illumination  implication  inclination  incorporation  indignation  inflammation  initiation  medication  meditation  navigation  negotiation  nomination  oxidation  proclamation  proliferation  propagation  registration  resignation  termination  utilization  annexation  attenuation  civilisation  coagulation  compilation  consolation  dedication  deliberation  deprivation  desperation  dislocation  dissipation  dissociation  evaporation  excavation  fabrication  fascination  fermentation  habitation  humiliation  incarnation  incubation  infiltration  ionization  localization  mobilization  preoccupation  remuneration  socialization  affectation  amputation  authentication  bifurcation  cancellation  connotation  culmination  delineation  deputation  devastation  divination  duplication  elucidation  enumeration  eradication  exclamation  fluctuation  germination  gravitation  immunization  imputation  interpolation  intonation  liquidation  menstruation  perspiration  perturbation  prolongation  provocation  refrigeration  repudiation  sanitation  segmentation  stagnation  sterilization  subjugation  utilisation  vaccination  vindication  visualization  combination  conversation  imagination  investigation  presentation  accumulation  conservation  demonstration  expectation  accommodation  computation  confirmation  congregation  consultation  degeneration  manipulation  rehabilitation  specification  articulation  assassination  certification  clarification  colonization  complication  denomination  disintegration  dissemination  evacuation  exaggeration  generalization  globalization  notification  purification  ratification  reorganization  sophistication  specialization  stabilization  subordination  unification  adjudication  amalgamation  augmentation  capitulation  centralization  commendation  conciliation  conflagration  conformation  consecration  constellation  consummation  deregulation  devaluation  dispensation  fertilization  hybridization  implantation  inoculation  interrogation  masturbation  mortification  normalization  ornamentation  punctuation  regurgitation  renunciation  resuscitation  sedimentation  simplification  synchronization  urbanization  administration  communication  concentration  consideration  examination  interpretation  classification  determination  participation  representation  transformation  compensation  configuration  differentiation  discrimination  implementation  justification  modification  transportation  anticipation  approximation  characterization  condemnation  confrontation  consolidation  contemplation  continuation  emancipation  precipitation  qualification  recommendation  reconciliation  amplification  condensation  fragmentation  gratification  liberalization  modernization  multiplication  optimization  privatization  pronunciation  signification  stratification  calcification  confederation  confiscation  consternation  constipation  crystallization  denunciation  extermination  inactivation  intimidation  polymerization  rationalization  supplementation  identification  contamination  documentation  manifestation  experimentation  industrialization  intoxication  transplantation  argumentation  capitalization  categorization  decentralization  diversification  hospitalization  instrumentation  magnetization  magnification  nationalization  personification  standardization  conceptualization  democratization  excommunication  intensification  misrepresentation  quantification  Words that almost rhyme with variolation
haven  basin  hasten  occasion  evasion  equation  invasion  persuasion  laden  layman  laymen  taken  pagan  shaken  bacon  maiden  shaman  patron  awaken  straighten  salesman  forsaken  overtaken  tradesmen  mistaken  statesman  contagion  undertaken