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There are 16 twelve-letter words containing A, 2I, 3O, S and T

COLONISATIONcolonisation n. Alternative spelling of colonization.
COLONISATION n. the act of colonising, also COLONIZATION.
COLORISATIONcolorisation n. The process of converting to color.
COLORISATION n. the act of colorising, also COLORIZATION, COLOURISATION, COLOURIZATION.
CONSOCIATIONconsociation n. (Uncountable) Associating, or coming together in a union; (countable) an instance of this.
consociation n. (Uncountable) Intimate companionship or fellowship; (countable) an instance of this.
consociation n. (Countable, Christianity) A confederation of Christian churches or organizations.
MOTORISATIONmotorisation n. Alternative spelling of motorization.
MOTORISATION n. the act of motorising, also MOTORIZATION.
OPINIONATORSopinionators n. Plural of opinionator.
OPINIONATOR n. one who holds or gives an opinion.
OPPOSITIONALoppositional adj. Of, pertaining to, or exhibiting opposition.
OPPOSITIONAL adj. relating to opposition.
OPSONISATIONopsonisation n. (British spelling, immunology) Alternative spelling of opsonization.
OPSONISATION n. the process of opsonising, also OPSONIZATION.
OPSONIZATIONopsonization n. (Immunology) The process or result of opsonizing.
OPSONIZATION n. the process of opsonizing, also OPSONISATION.
OVARIOTOMIESovariotomies n. Plural of ovariotomy.
OVARIOTOMY n. the operation of removing one or both of the ovaries, aka oophorectomy.
OVARIOTOMISTovariotomist n. (Surgery, now historical) Someone who performs a ovariotomy.
OVARIOTOMIST n. one who carries out ovariotomies.
OZONISATIONSozonisations n. Plural of ozonisation.
OZONISATION n. the act of treating with ozone, also OZONATION, OZONIZATION.
OZONIZATIONSozonizations n. Plural of ozonization.
OZONIZATION n. the act of treating with ozone, also OZONATION, OZONISATION.
RADIOISOTOPEradioisotope n. (Physics) a radioactive isotope of an element.
RADIOISOTOPE n. a radioactive isotope.
ROBOTISATIONrobotisation n. Alternative spelling of robotization.
ROBOTISATION n. the act of causing a job to be done by robots, also ROBOTIZATION.
SOLONISATIONSOLONISATION n. the process by which a solonetz is formed, also SOLONIZATION.
SOLONIZATIONSOLONIZATION n. the process by which a solonetz is formed, also SOLONISATION.

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: 29 words
  • Scrabble in French: 16 words
  • Scrabble in Spanish: 16 words
  • Scrabble in Italian: 44 words
  • Scrabble in German: no word
  • Scrabble in Romanian: 32 words


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