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