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There are 99 eighteen-letter words containing A, 2C and 4O

accommodation␣coachadenocorticotropicAfricoon-Americoons Africoon␣Americoonsaminochronologicalastrochronologicalbiochronologicallybiological␣controlsbronchoprovocationbronchoprovocativecacospongionolideschemoorganotrophicchloroacetophenonechlorofluorocarbonchlorohydrocarbonscholedochoduodenalchondromyxosarcomachromocollographicchromophotographicchronobiologicallychronopharmacologychronophotographiccochleosacculotomycolour␣coordinationcome␣from␣a␣good␣placecompound␣chocolatesconfocal␣microscopycontinuation␣schoolcopromicroscopicalcopromycetophagouscoproparasitologiccoproparasitoscopycorpus␣calloscotomycorticomelanotrophcosmochronologicalcosmophysiologicalde␣facto␣corporationdolichomacrostomidecomorphologicallyecotoxicologicallyelectrotopologicalendocytobiologicalethnochoreologicalfactor␣of␣productiongeochronologicallygeomicrobiologicalhecatonicosachoronichnomorphologicallexicophonologicallocatio␣et␣conductioloculoascomycetousmacroconidiophoresmacromorphologicalmacrozooplanktonicmagnetochronologicmesofrontocorticalmicroconsolidationmicromorphologicalmicropaleontologicmicrozooplanktonicmyconanotechnologyneurotoxicologicalnonchronologicallynonmicrobiologicalon␣a␣collision␣courseoncohaematologicalopsonophagocytoticorganoboronic␣acidsosteoarcheologicalosteoradionecroticotomicroscopicallypaleochronologicalpanproctocolectomyparacrocodylomorphphaeochromocytomasphaerochromocytomapharmacotoxicologypheochromocytomataphotochronographicphotocycloadditionphytotoxicologicalprothoracicotropicprotocoligoricallyprotopsychologicalpsychocosmologicalpsychosociologicalptilochronologicalradiochronologicalradiotoxicologicalreprotoxicologicalSanto␣Tomás␣Ocotepecschool␣of␣hard␣knockssociophilosophicalsociopoliticolegalsociopsychologicalsociotechnologicaltoxicopathologicaltoxicopharmacologyzoopharmacological

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See this list for:

  • Scrabble in English: no word
  • French Wiktionary: 17 words
  • Spanish Wiktionary: 8 words
  • Italian Wiktionary: 17 words
  • German Wiktionary: no word
  • Portuguese Wiktionary: 9 words
  • Dutch Wiktionary: 3 words

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