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There are 123 twenty-one-letter words containing A, C, 2H and 3O

alcohol␣flush␣reactionsanthropomorphologicalarchaeological␣horizonarchaeothanatologicalarcheological␣horizonsatherothrombogenicityautohistoradiographicbacteriopheophorbidesbehavioural␣psychologybromodichloromethanesbromotrichloromethanebronchoesophagoscopic broncho-esophagoscopicbroncho-oesophagoscopychemolithoautotrophicchemolithotrophicallychenodesoxycholic␣acidchitooligosaccharideschlorodifluoromethanechlorophenylhydrazonechlorotetrahydrofurancholesterohydrothoraxchronobiogeographicalchronopharmacodynamicchronopharmacokineticchronopharmacologicalchronopharmacotherapycompact␣neighbourhoodscontinental␣philosophycytohistopathologicaldibromochloromethanesdichlorofluoromethanedichlorophenoxyaceticdihydroxyacetophenonedirector␣of␣photographyEastern␣Orthodox␣Churchectophosphodiesteraseelectrochromatographyelectrocochleographicelectroencephalophoneethnoarchaeologicallyethnomethodologicallyglycerophosphoric␣acidglycerophosphorylatedheterochromatizationsheterooligosaccharidehexachloroantimonateshexachlorocyclohexanehexachlorocyclohexenehexachlorofluoresceinhexafluorothioacetonehistomorphometricallyhistoricogeographicalhistoriophilosophicalhitch␣one's␣wagon␣to␣a␣starhydrogeomorphologicalichthyoallyeinotoxismichthyoarchaeologicalichthyoplanktologicalichthyoplanktologistsicosihemidodecahedronimmunochromatographicimmunohistopathologicinositolphosphoglycanKirkton␣of␣Auchterhouseknock␣the␣daylight␣out␣ofmorphophysiologicallymyocerebrohepatopathyneuroophthalmologicalneuropsychopathologicnitro-hydrochloric␣acidnonphotosyntheticallynot␣know␣which␣way␣to␣turnonce␣more␣into␣the␣breachophthalmodynamometricophthalmopathologicalorthographic␣neighborsorthographic␣neighbourorthophotographicallypathological␣histologypentacontaheptachoronpharmacophylogenomicspharmacophysiologicalpharyngoesophagectomypharyngoesophagoscopephosphoaminoglycosidephosphoglucoisomerasephosphogluconolactonephosphoglyceromutasesphotochemical␣reactionphotochemotherapeuticphotographic␣emulsionsphotolithoautotrophicphotolithographicallyphotomechanochemistryphotomicrographicallyphotoplethysmographicphotothermoelasticityphysiopharmacologicalphytophenomenologicalpoliticophilosophicalpseudoanthropomorphicpsychological␣hedonismpsychopathophysiologypsychopharmacologicalpsychopharmacologistspsychophysiologicallyput␣the␣change␣on␣someoneradiophotographicallyrenohistopathologicalRussian␣Orthodox␣ChurchSerbian␣Orthodox␣Churchtephrochronologicallythermochromatographicthermochronologicallythrow␣caution␣to␣the␣windtracheobronchomalaciatracheobronchoscopiestrichloronitromethanetungstophosphoric␣acidtypographic␣apostropheultramicrophotographyultraphotomicrographs

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See this list for:

  • Scrabble in English: no word
  • French Wiktionary: 79 words
  • Spanish Wiktionary: no word
  • Italian Wiktionary: no word
  • German Wiktionary: 13 words
  • Portuguese Wiktionary: no word
  • Dutch Wiktionary: 1 word

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