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