Here's what rhymes with placentation.
                        
                        
                    
                                nation  foundation  station  sensation  imitation  notation  temptation  veneration  aeration  lamentation  operation  situation  generation  duration  presentation  representation  separation  variation  indication  innovation  inspiration  invitation  limitation  rotation  assimilation  hesitation  irritation  plantation  vegetation  ventilation  affiliation  cessation  federation  maturation  mediation  moderation  mutation  narration  negation  aberration  adoration  affectation  citation  donation  gestation  innervation  intimation  iteration  oration  sanitation  sedation  visitation  ablation  annotation  dilation  elation  emanation  information  education  relation  creation  formation  association  integration  location  radiation  admiration  deviation  elevation  immigration  implementation  inflation  liberation  migration  motivation  orientation  restoration  salvation  taxation  violation  accommodation  agitation  alteration  aspiration 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organization  communication  interpretation  classification  determination  identification  accumulation  discrimination  justification  organisation  approximation  congregation  contamination  contemplation  coordination  depreciation  deterioration  manipulation  qualification  specification  utilization  certification  clarification  colonization  denomination  evacuation  experimentation  generalization  gratification  intoxication  localization  signification  socialization  specialization  stabilization  stratification  subordination  amalgamation  calcification  confiscation  consecration  denunciation  deregulation  devaluation  exclamation  extermination  fertilization  hybridization  inoculation  magnetization  misrepresentation  mortification  personification  polymerization  rationalization  standardization  sterilization  synchronization  utilisation  visualization  calculation  characterization  articulation  coagulation  globalization  liberalization  multiplication  reorganization  categorization  conflagration  crystallization  decentralization  diversification  magnification  nationalization  normalization  quantification  capitalization  conceptualization  democratization  hospitalization  intensification  excommunication  industrialization  Words that almost rhyme with placentation
basin  haven  hasten  occasion  invasion  evasion  equation  persuasion  taken  pagan  bacon  patron  shaken  laden  maiden  layman  laymen  shaman  mistaken  awaken  contagion  straighten  undertaken  statesman  salesman  forsaken  overtaken  tradesmen