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There are 767 eighteen-letter words containing E, 2I, O, R and Y

(page 5)

postpericardiotomypostpolymerizationpotassium␣hydroxidepotential␣vorticitypotentiometricallyprecompositionallyprecrystallizationpredispositionallyPresidency␣divisionpresuppositionallypresynchronizationprimary␣hypothermiaprimary␣legislationprinciple␣of␣charityprobability␣densityprobability␣measureprobationary␣periodprolymphangiogenicpropionylpromasineproposition␣playersproprietary␣tradingpropriosensitivityprosecution␣historyprosperity␣doctrineprotodesilylationsproximoposteriorlypseudoheritabilitypseudouridylationspseudoxyrhophiinespsychogeriatricianpsychrosensitivitypyelonephritogenicpyrazolopyrimidinepyrheliometricallypyridinylimidazolepyridylsulfoximinepyrimidodiazepinespyrimidopyrimidinepyrrolidinophenonequasithermodynamicradiation␣chemistryradiation␣pyrometerradioimmunoassayedradioimmunotherapyradiosynovectomiesreconstitutabilityreconstructabilityreconstructibilityrecrystallisationsrecrystallizationsrectosigmoidectomyrectosigmoidoscopyreductionisticallyregistration␣countyresolution␣advisoryrespiratory␣pigmentrestriction␣enzymesresyllabificationsresynchronisationsresynchronizationsreticulocytopeniasretinohypothalamicretransformabilityretrocycloadditionRiemannian␣geometryround-trip␣delay␣timerumination␣syndromesalpingovariectomySanfilippo␣syndromescansoriopterygidsscimitar-horned␣oryxsecondary␣emissionssecondary␣infectionsecondary␣intentionsecondary␣liabilityseismocardiographysemibiographicallysemiconservativelysemiprofessionallysemisymmetrizationserodiagnosticallysialoglycoproteinssialylglycoproteinSiberian␣rubythroatsick␣office␣syndromesignature␣authorityskinny␣drink␣of␣watersleeping␣dictionarysocioendocrinologysodium␣borohydridessodium␣hypochloritesolitary␣sandpipersspondylarthritidesstandard␣of␣identitystationary␣bicyclesstereoisomericallystereospecificallystinking␣corpse␣lilystoichiometricallystyrylisothiazolessuccinylproteomicssulfonic␣anhydridessulphonic␣anhydridesuperagonisticallysupercontractivitysuperiority␣complexsuperoleophobicitysuperphysiologicalsuperpositionalitysuperstoichiometrysymbolic␣expressionsymmetric␣functionssynchronized␣diverssynchronized␣divingsyringohydromyeliatake␣responsibilitytertiary␣phosphinestetrahydropyridinetetrahydrotriazinetetraiodothyroninetheoretical␣physicstheory␣of␣relativitythermoconductivitythermoinducibilitythermophysiologiesthermoreflectivitythermoresponsivitythiocarbohydrazidethree-dimensionallythrombocytokineticthrombocytopoiesisthrombocytopoieticthrowaway␣ticketingTorne␣Valley␣Finnishtrialkylphosphinestriazolopyrimidinetrichlorobiphenylstrichlorodiphenylstrideoxynucleotidetrifluorothymidinetrihexosylceramidetrihydroxystilbenetriisopropylsilanetrimethylammoniumstrimethylguanosinetrimethylphosphinetrimethylsulfoniumtriphenylphosphinetrivinylphosphines

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See this list for:

  • Scrabble in English: no word
  • French Wiktionary: 701 words
  • Spanish Wiktionary: 3 words
  • Italian Wiktionary: no word
  • German Wiktionary: 49 words
  • Portuguese Wiktionary: no word
  • Dutch Wiktionary: 21 words

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