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There are 20 twelve-letter words containing A, C, H, I, O, S, T and U

ACOLOUTHITESACOLOUTHITE n. (obsolete) an acolyte.
ANACOLUTHIASanacoluthias n. Plural of anacoluthia.
ANACOLUTHIA n. a nonsequential syntactic construction in which the latter part of a sentence does not grammatically fit the earlier.
AUTORICKSHAWautorickshaw n. A motorized rickshaw of South Asia and East Asia, often available for hire in the manner of a taxi.
AUTORICKSHAW n. a light, three-wheeled vehicle powered by a motorcycle engine, used in India, etc.
CHAETIFEROUSchaetiferous adj. (Zoology) Bearing chaetae.
CHAETIFEROUS adj. bearing bristles; bristly.
COAUTHORSHIPcoauthorship n. Joint authorship by two or more authors.
COAUTHORSHIP n. the role of coauthor.
CURATORSHIPScuratorships n. Plural of curatorship.
CURATORSHIP n. the office of curator.
EUCHROMATINSeuchromatins n. Plural of euchromatin.
EUCHROMATIN n. the part of chromatin that is genetically active and is largely composed of genes.
FUCOXANTHINSfucoxanthins n. Plural of fucoxanthin.
FUCOXANTHIN n. a brown carotenoid pigment occurring esp. in the chloroplasts of brown algae.
HUMECTATIONShumectations n. Plural of humectation.
HUMECTATION n. the act of moistening.
ICHTHYOSAURIichthyosauri n. Plural of ichthyosaur.
ICHTHYOSAURUS n. a large fossil marine reptile, also ICHTHYOSAUR, ICHTHYOSAURIAN.
ICHTHYOSAURSichthyosaurs n. Plural of ichthyosaur.
ICHTHYOSAUR n. a large fossil marine reptile, also ICHTHYOSAURIAN, ICHTHYOSAURUS.
MOUSTACHIOEDmoustachioed adj. (Of a man or his face) Possessing a moustache or moustachio.
moustachioed v. Simple past tense and past participle of moustachio.
MOUSTACHIOED adj. having a moustachio.
OCTASTICHOUSoctastichous adj. (Botany) Having a phyllotaxis of eight leaves in each spiral around a stem.
OCTASTICHOUS adj. in eight rows, also OCTOSTICHOUS.
PARASTICHOUSPARASTICHOUS adj. characterised by parastichy, i.e. having a secondary helix joining leaf-bases on an axis.
PHOSPHATURICphosphaturic adj. (Pathology) Relating to phosphaturia.
PHOSPHATURIC adj. relating to phosphaturia, the excessive discharge of phosphates in the urine.
ROUGHCASTINGroughcasting v. Present participle of roughcast.
ROUGHCAST v. to cover with roughcast.
TAUROMACHIEStauromachies n. Plural of tauromachy.
TAUROMACHY n. the art of bullfighting.
THIOBACILLUSthiobacillus n. Any bacillus that is capable of metabolising sulfur, especially members of the genus Thiobacillus.
Thiobacillus prop.n. A taxonomic genus within the family Hydrogenophilaceae – the sulfur bacteria.
THIOBACILLUS n. any of several rod-shaped bacteria that derive energy from the oxidation of sulphur or sulphur compounds.
TRICEPHALOUStricephalous adj. Having three heads.
TRICEPHALOUS adj. having three heads.
UNHISTORICALunhistorical adj. Not historical; not based on history.
UNHISTORICAL adj. not historical.

Scrabble words — in black are valid world wide — in RED are not valid in North America — in GREEN are valid only in North America.
Definitions are short excerpt from the WikWik.org and 1Word.ws.

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See this list for:

  • English Wiktionary: 95 words
  • Scrabble in French: 43 words
  • Scrabble in Spanish: 14 words
  • Scrabble in Italian: 36 words
  • Scrabble in German: no word
  • Scrabble in Romanian: 25 words


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