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There are 929 eighteen-letter words containing A, C, H, I, 2O and T
(page 5)
octabromoporphyrin octachlorobiphenyl octadehydrocorrins officers␣of␣the␣peace oligochaetologists oncohaematological operations␣research ophthalmologically opisthobranchiates opposition␣research opsonophagocytosis opsonophagocytotic organisation␣charts organization␣charts organolithotrophic organopathological organotherapeutics orthogonal␣function orthokeratological orthopediatricians orthopsychiatrists orthorectification orthotypographical ostarioclupeomorph osteoarchaeologist osteoarcheological osteoarcheologists osteoarthrectomies osteochondropathia osteomorphological ovariohysterectomy overaccomplishment oversophistication p-acetylaminophenol pachinko␣allocation pachychoroidopathy pachyrhizodontoids paedopsychologists palaeobiochemistry palaeoethnological palaeogeochemistry palaeohistological palaeontographical palaeopathological palaeopropithecids paleoichthyologist paleornithological paleospinothalamic paleotopographical panhypoproteinemic pathomorphological pathophysiological pathopsychological patristic␣anthology pentachloroanisole petro-dictatorships phacofragmentation phacomulcification phallologocentrism pharmacoeconomists pharmacogenotyping pharmacoinformatic pharmacomodulation pharmacopathogenic pharmacoprotective pharmacoproteomics pharmacotoxicology pharyngoepiglottic phosphoacetylation phosphocholination phosphometabolomic phosphonopentanoic phosphorocyanidate phosphorylcreatine photoacclimational photoallergenicity photoantimicrobial photocatalytically photochemical␣smogs photochlorinations photochronographic photoconceptualism photoconceptualist photocrosslinkable photocycloaddition photodecolouration photodeconjugation photodissociations photodocumentaries photodocumentation photoelectroactive photoencapsulation photofluorographic photofunctionalize photoglottographic photographic␣artist photographic␣memory photographic␣papers photographic␣plates photoinactivations photoincorporation photokeratectomies photomicrographers photomicrographing photomorphological photoorganotrophic photophysiological photoprecipitation photorecombination photoswitchability photosynthetically phototherapeutical photothermoplastic phototopographical phototypographical photovoltaic␣effect phycoerythrocyanin phylotranscriptome physicotheological physiopathological phytomorphological phytopathogenicity phytopharmacologic phytophysiological phytotopographical phytotoxicological picophotoautotroph plainclothesperson platinochloric␣acid Pointe␣Coupee␣Parish politicohistorical polychemotherapies polychromatophiles polychromatophilia polychromatophilic polyendocrinopathy polyphthalocyanine pontomesencephalic postbronchodilator postpsychoanalytic potassium␣chromates potato␣chip␣of␣the␣sea preached␣to␣the␣choir preaches␣to␣the␣choir preatherosclerotic presynchronization proatherosclerosis proatherosclerotic procardiomyopathic prochaetodermatids proteocephalideans prothoracicotropic protocatechuic␣acid
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See this list for:
- Scrabble in English: no word
- French Wiktionary: 760 words
- Spanish Wiktionary: 11 words
- Italian Wiktionary: 15 words
- German Wiktionary: 150 words
- Portuguese Wiktionary: 11 words
- Dutch Wiktionary: 66 words
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