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There are 605 eighteen-letter words containing O and X

(page 4)

oportuzumab␣monatoxOriental␣Orthodoxesout-of-box␣experienceoverapproximations over-approximationsovercontextualizedovercontextualizesoverexcitabilitiesoverextrapolationsoverlexicalizationoxazaphospholidineoxazolidinethionesoxidation-reductionoxydehydrogenationoxygen␣catastrophesoxyhydroxysulfatespaleochemotaxonomyparadoxes␣of␣fictionparahydroxybenzenepentacarbon␣dioxidepentaformylgitoxinperfluorohexanoateperformance␣anxietyperoxodiphosphatesperoxomonosulfatespharmacotoxicologyphenoxaphosphininephosphohexomutasesphosphorus␣cachexiaphotic␣sneeze␣reflexphotoperoxidationsphytophototoxicityphytotoxicologicalpinxterbloom␣azaleapolycarboxylic␣acidpolycontexturalitypolyhydroxyphenolspolymethoxyflavonepolyphenoloxidasespolyphenylene␣oxidepolypseudorotaxanepolyvinylsiloxanesportable␣executablepositional␣asphyxiapossessive␣suffixespotassium␣hydroxidepredecarboxylationprocess␣window␣indexproducer␣price␣indexproofs␣by␣exhaustionprototype␣extensionProxima␣Centauriansproximate␣principleproximoposteriorlypseudoexacerbationpseudoexfoliationspseudoexophthalmospseudoxyrhophiinespublic␣intoxicationpyridylsulfoximineradiculoplexopathyradiotoxicologicalred-billed␣leiothrixregular␣expressionsreprotoxicologicalrhombitrihexagonalruns␣for␣the␣exerciseruthenium␣tetroxidesafety-deposit␣boxesSaxe-Coburg␣and␣Gothascimitar-horned␣oryxsee␣you␣next␣Thursdayselenoalkoxylationseparable␣extensionSeptember␣equinoxessex-on-premises␣venuesexual␣dichromatismsexual␣intercoursessexual␣orientationssexual␣reproductionshort␣exact␣sequenceSiebenbürgen␣SaxonsSiebenbürger␣Saxonssix␣bob␣a␣day␣touristssopranino␣saxophonesoprano␣saxophonistsoprillo␣saxophonessouthward␣equinoxessplit-complex␣numberSprengel␣explosivesstatutory␣exclusionsticking␣to␣one's␣textstock␣market␣indexessubcontrabass␣saxessubtextualizationssuccinocarboxamidesuck␣the␣oxygen␣out␣ofsulfametoxydiazinesulfamonomethoxinesulfanyloxazolinessulfur␣hexafluoridesuperexponentiallysuperextraordinarysuperiority␣complexSussex␣pond␣puddingssymbolic␣expressionsympathoexcitationsympathoexcitatorytaurodeoxycholatestaxonomic␣inflationtelephone␣exchangestetracarbon␣dioxidetetrahexylammoniumtetrahydroxyboratetetrakishexahedron tetrakis␣hexahedrontext␣door␣neighbourstext␣simplificationthiocarboxylic␣acidthought␣experimentsthromboprophylaxesthromboprophylaxistoxicopathologicaltoxicopharmacologytoxic␣shock␣syndrometraffic␣signal␣boxestranscarboxylationtransition␣matrixestranssexualizationTransylvanian␣SaxonTransylvania␣Saxonstricarboxylic␣acidstrideoxynucleotidetrihexosylceramidetrihydroxybenzenestrihydroxybenzoatetrihydroxystilbenetrimedoxime␣bromidetyrannosaurus␣rexes Tyrannosaurus␣rexes Tyrannosaurus␣Rexesunchecked␣exception

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