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There are 389 eighteen-letter words containing E, I, 2O, 2R and Y

(page 3)

pseudohypertrophicpyrazolopyrimidinepyroelectrodynamicpyrophosphoramidespyrrolidinophenoneradiation␣pyrometerradiculoneuropathyradioimmunotherapyradiometallographyradiometeorographyreality␣pornographyregistration␣countyrephosphorylationsresolution␣advisoryrestoration␣ecologyresynchronisationsresynchronizationsretrocycloadditionretrophylogenomicsrhinolaryngoscopesRocky␣Mountain␣feverrosebay␣willowherbsrotational␣symmetryrumination␣syndromescansoriopterygidsscimitar-horned␣oryxsecondary␣drowningssecondary␣predationseismocardiographyservant␣out␣of␣liverySir␣Roger␣de␣CoverleySir␣Roger␣of␣Coverleysodium␣borohydridesspectrocolorimetryspectrofluorimetryspectroheliographyspectropolarimetryspirocyclopropanesspondyloperipheralstephanoberyciformstereoisomericallystorage␣hypervisorsstrongylocentrotidstrontiopyrochloresuffer␣by␣comparisonsuperiority␣complexsuperstoichiometrysyringohydromyeliaTaylor-White␣processtelephone␣directorytetrahydridoboratetetrahydrochloridetetrahydrocortisoltetraiodothyroninetheory␣of␣everythingtheory␣of␣relativitythermoacoustimetrythermohydrodynamicthermophoreticallythermoradiotherapythermoresponsivitythiocarbohydrazidethyrohyoid␣membranethyrotropic␣hormoneTommy␣John␣surgeriesTooley␣Street␣tailorToonerville␣Trolleytouring␣motorcyclestransferuloylationtranshydrogenation trans-hydrogenationtranspolyisoprenestrash␣heap␣of␣historytriazolopyrimidinetrichlorobiphenylstrichlorodiphenylstrichloroethylenestrifluoromethylatetrifluorothymidinetrihydroxybenzoatetriisopropylsilanetrimethylolpropanetypographical␣errorultracryomicrotomeultrarevolutionaryundercarboxylationunderhydroxylationureterolithotripsyureteropyeloscopicurethrocystoscopicvectorcardiographywere␣you␣born␣in␣a␣tentwinter-over␣syndromeYour␣Worshipfulness

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See this list for:

  • Scrabble in English: no word
  • French Wiktionary: 282 words
  • Spanish Wiktionary: 1 word
  • Italian Wiktionary: no word
  • German Wiktionary: 26 words
  • Portuguese Wiktionary: no word
  • Dutch Wiktionary: 7 words

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