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There are 100 eighteen-letter words containing H, N, 2O, R and X

aldohexuronic␣acidsaminohydroxylationantibioprophylaxisantiochratoxigenicbaritone␣saxophonesbishydroxycoumarinbox␣and␣whisker␣plotsbox␣and␣whiskers␣plotcarboxyhaemoglobincarboxyhemoglobinscarboxymethylationcarboxyprothrombinchlorodeoxyuridinechloroethoxyamineschondromyxosarcomacounterorthodoxiesdeoxyerythronolidedeoxyribothymidinedeoxytylophorininedextropropoxyphenediboron␣hexahydridedichlorine␣hexoxidedichlorine␣monoxidedihydrogenmonoxide dihydrogen-monoxide dihydrogen␣monoxidedihydroxyanthronesdihydroxybenzoatesdihydroxychalconeselectroaxonographyentorhinal␣cortexesexponential␣growthsextramitochondrialGoldberg-Hogness␣boxhalohydroxylationshematopneumothoraxheterocomplexationhexabromobiphenylshexachlorobenzeneshexachlorobiphenylhexafluoroacetoneshexafluorodisilanehexafluorotitanatehexakisoctahedronshexatetracontanoichomogeneous␣mixturehydroalkoxylationshydrocarboxylationhydrodeoxygenatinghydrodeoxygenationhydroperoxidationshydroperoxyflavinshydroperoxylationshydrophenoxylationhydroxyalkylationshydroxybenzoic␣acidhydroxycarotenoidshydroxychloroquinehydroxycyclizationhydroxyhalolactonehydroxyiodolactonehydroxymaprotilinehydroxymethylationhydroxyphosphonatehydroxytryptophanshydroxywithanolideichthyosarcotoxinsLaxton␣and␣Moorhousemethoxytryptophansmitochondriotoxinsmonohydroperoxidesmonohydroxylationsmonohydroxymethanenanohydroxyapatiteneurosporaxanthinenonheterosexualitynonlexicographicalnorthward␣equinoxesOgden-Roxburgh␣modelOriental␣Orthodoxesoxydehydrogenationoxygen␣catastrophesperfluorohexanoatephotoperoxidationspolyhydroxyphenolsproofs␣by␣exhaustionpseudoxyrhophiinesrhombitrihexagonalSaxe-Coburg␣and␣Gothascimitar-horned␣oryxsopranino␣saxophonesoprano␣saxophonistsoprillo␣saxophonessouthward␣equinoxestext␣door␣neighbourstoxic␣shock␣syndrometrihydroxybenzoateunderhydroxylationwhisky␣tango␣foxtrotxanthoastrocytomas

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See this list for:

  • Scrabble in English: no word
  • French Wiktionary: 47 words
  • Spanish Wiktionary: no word
  • Italian Wiktionary: no word
  • German Wiktionary: 5 words
  • Portuguese Wiktionary: no word
  • Dutch Wiktionary: 2 words

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