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There are 429 eighteen-letter words containing 2A, 3O and S

(page 3)

overextrapolationsoviraptorosauriansoxazaphospholidinepaddle␣one's␣own␣canoepaedopsychologicalPalaeodicotyledonspalaeoentomologistpalaeoethnologistspalaeohistologicalpalaeohydrologistspalaeolimnologistspalaeomastologicalpalaeoneurologistspalaeoparasitologypalaeopathologistspalaeornithologistpalaeotempestologypaleoclimatologistpaleoethnobotanistpaleomalacologistspaleopalynologistspaleophysiologicalpaleopsychologicalpaleoseismologicalpalinactinodromousparacoccidioidomasparadoxes␣of␣fictionpathophysiologicalpathopsychologicalpentachloroanisolephaeochromocytomaspharmacoeconomistspharmacophysiologypharmacoproteomicsphosphoacetylationphospholipomannansphosphomannomutasephosphomevalonatesphosphorocyanidatephosphorodiamidatephotoassimilationsphotoencapsulationphotoinactivationsphotostabilizationphototransformablephysiopathologicalpolar␣covalent␣bondspolitical␣footballspolypharmacologiespolypseudorotaxanepolysomnographicalpolyvalerolactonespoor␣as␣a␣church␣mousepoor␣is␣a␣state␣of␣mindpositional␣notationpostdepositationalpostfoundationallypostrepolarizationpotato␣chip␣of␣the␣seapreprosomatostatinpronominalizationsprosopographicallyproteoaminoglycansprovisionalizationpseudoalteromonadspseudoangiomatosispseudolocalization pseudo-localizationpseudopathologicalpsychopathologicalpsychopharmacologypsychosomatizationpsychotraumatologypushdown␣automatonsquadragesimo-octavoquasimonochromaticradiation␣poisoningradiochromatogramsradiochromatoscansradioembolisationsradioembolizationsradiofluorinationsradiohalogenationsradioimmunosorbantradiometeorographsraking␣over␣old␣coalsretroaldolizationsretrotranslocationrhabdomyosarcomatarostrodorsolateralrotational␣moldingssail␣on␣another␣boardSakharov␣conditionsSanto␣Tomás␣Ocotepecsapromycetophagousscapulocoracoideumsecond␣moment␣of␣areaselenoalkoxylationseparation␣of␣powerssialoglycoproteasesialoglycosylationsignal-to-noise␣ratioslaps␣someone␣aroundsocial␣anthropologysociodemographicalsoft␣as␣a␣baby's␣bottomsomatomammotropinsSonoran␣Desert␣toadssonosalpingographysopranino␣saxophonesoprano␣saxophonistSouth␣Low␣Franconianspermatoproteasomesynaptodendrosomaltalk-aloud␣protocols talk␣aloud␣protocolstalk␣someone's␣arm␣offtalk␣someone's␣ear␣offtaurodeoxycholatestaurolithocholatesTaylor's␣polynomialstear␣someone␣a␣new␣onetelecollaborationstetrafluoroboratesthalamoperforatorsthoracolumbosacralthrombocytopaeniasthromboelastogramsthromboelastographtoast␣notificationstomato␣concentratestracheooesophageal tracheo-oesophagealultrasonologicallyUnion␣of␣South␣AfricaVerbano-Cusio-Ossolaviolaceous␣euphoniaviscocanalostomiesvocationalizationswarning␣colorationswhat␣has␣someone␣donewolframophosphatesxanthoastrocytomasyouth␣organizationsZoroastrianization

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