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List of 12-letter words containing

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There are 11 twelve-letter words containing I, 2M, O, 2S, T and U

AMPHISTOMOUSamphistomous adj. (Zoology) Having a sucker at each extremity.
AMPHISTOMOUS adj. having a sucker at either end, as some worms.
COMMUNALISTScommunalists n. Plural of communalist.
COMMUNALIST n. an adherent of communalism.
IMPOSTUMATESIMPOSTUMATE v. to form or inflict an abscess, also IMPOSTHUMATE.
MESOGASTRIUMmesogastrium n. (Anatomy) The part of the embryonic mesentery that includes the stomach.
MESOGASTRIUM n. the mesentery supporting the embryonic stomach.
MESOTHELIUMSMESOTHELIUM n. squamous cells lining peritoneum, pericardium, and pleura.
MESOTHORIUMSmesothoriums n. Plural of mesothorium.
MESOTHORIUM n. an old name for either of two radioactive elements.
MICROSTOMOUSMICROSTOMOUS adj. having an unusually small mouth, also MICROSTOMATOUS.
MISSUMMATIONmissummation n. Wrong summation; incorrect addition.
MISSUMMATION n. wrong addition.
MUSHROOMIESTMUSHROOMY adj. of or like a mushroom.
SOMNAMBULISTsomnambulist n. A person who walks about in their sleep; a sleepwalker.
SOMNAMBULIST n. a sleepwalker, also SOMNAMBULE.
TAUTOMERISMStautomerisms n. Plural of tautomerism.
TAUTOMERISM n. possession of more than one structure by a substance.

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 1Word.ws and WikWik.org.

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See this list for:

  • English Wiktionary: 32 words
  • Scrabble in French: 8 words
  • Scrabble in Spanish: 27 words
  • Scrabble in Italian: 27 words
  • Scrabble in German: no word
  • Scrabble in Romanian: 2 words


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