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List of 12-letter words containing

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There are 14 twelve-letter words containing A, C, K, O and Y

CRYOPLANKTONCRYOPLANKTON n. minute organisms, esp. algae, living in ice, snow, or icy water.
CYCLOALKANEScycloalkanes n. Plural of cycloalkane.
CYCLOALKANE n. an alicyclic hydrocarbon with a saturated ring, aka cycloparaffin.
CYTOSKELETALcytoskeletal adj. Of or pertaining to a cytoskeleton.
CYTOSKELETAL adj. of or like a cytoskeleton.
HYDROCRACKEDhydrocracked v. Simple past tense and past participle of hydrocrack.
hydrocracked adj. That has been subjected to hydrocracking.
HYDROCRACK v. to crack hydrocarbons in the presence of hydrogen.
HYDROCRACKERhydrocracker n. (Organic chemistry) A chemical engineering plant in which hydrocracking takes place.
HYDROCRACKER n. one engaged in hydrocracking.
KAKISTOCRACYkakistocracy n. Government under the control of a nation’s worst or least-qualified citizens.
KAKISTOCRACY n. government by the worst men of the state.
KARYOKINETICkaryokinetic adj. Of or pertaining to karyokinesis.
KARYOKINETIC adj. relating to karyokinesis, division of the cell nucleus.
KARYOLOGICALkaryological adj. Karyologic.
KARYOLOGICAL adj. relating to karyology, the study of cell nuclei, also KARYOLOGIC.
KARYOPLASMICkaryoplasmic adj. Relating to, or composed of karyoplasm.
KARYOPLASMIC adj. of or like karyoplasm, nucleoplasm.
KARYOTYPICALkaryotypical adj. Relating to, or characteristic of a karyotype.
KARYOTYPICAL adj. of or like a karyotype, the appearance, number and arrangements of chromosomes, also KARYOTYPIC.
MOCKUMENTARYmockumentary n. (Film) A film or television programme presented as if it were a documentary but that is not factual…
MOCKUMENTARY n. a spoof documentary.
POLICYMAKERSpolicymakers n. Plural of policymaker.
policy␣makers n. Plural of policy maker.
POLICYMAKER n. one who makes policy.
SHOCKABILITYshockability n. The condition of being shockable; the capacity to be shocked.
SHOCKABILITY n. the quality of being shockable.
YELLOWJACKETyellowjacket n. Alternative form of yellow jacket (“predatory wasp with alternating black and yellow stripes around the abdomen”).
yellow-jacket n. Alternative form of yellow jacket.
yellow␣jacket n. (Chiefly US) A predatory wasp with alternating black and yellow stripes around the abdomen, usually…

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: 190 words
  • Scrabble in French: 1 word
  • Scrabble in Spanish: no word
  • Scrabble in Italian: no word
  • Scrabble in German: no word
  • Scrabble in Romanian: no word


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