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List of 12-letter words containing

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There are 13 twelve-letter words containing I, 2O and 2Y

CYTOTOXICITYcytotoxicity n. (Biology) the property of being toxic to a cell.
CYTOTOXICITY n. the quality of being cytotoxic.
DACTYLIOLOGYdactyliology n. The branch of archaeology dealing with gem engraving.
dactyliology n. The branch of archaeology dealing with finger rings.
DACTYLIOLOGY n. the study of finger-rings.
EPIPHYTOLOGYepiphytology n. Study of epiphytes and their ecology.
EPIPHYTOLOGY n. the study of epiphytes.
HOMOZYGOSITYhomozygosity n. The condition of being homozygous.
HOMOZYGOSITY n. the state of being homozygous, inheriting a given genetic factor from both parents.
HYDROBIOLOGYhydrobiology n. (Biology) The study of the biology of the organisms that inhabit bodies of water.
HYDROBIOLOGY n. the study of aquatic organisms.
HYPOCYCLOIDShypocycloids n. Plural of hypocycloid.
HYPOCYCLOID n. a curve generated by a point on the circumference of a circle which rolls on the inside of another circle.
HYPODIPLOIDYhypodiploidy n. The state of being hypodiploid; hypoploidy in diploid organisms (including humans).
HYPODIPLOIDY n. the state of being hypodiploid, having slightly fewer than the diploid number of chromosomes.
HYPOTHYROIDSHYPOTHYROID n. someone suffering from hypothyroidism.
HYPOTONICITYhypotonicity n. The quality of being hypotonic.
HYPOTONICITY n. the state of being hypotonic.
POLYMYOSITISpolymyositis n. (Medicine) An inflammatory disease affecting multiple muscles.
POLYMYOSITIS n. inflammation of several muscles at the same time.
POLYTONALITYpolytonality n. (Music) The use of multiple keys in the same composition, especially by multiple instruments at the same time.
POLYTONALITY n. two or more tonalities in a composition.
PYRAMIDOLOGYpyramidology n. The study of pyramids (especially the Egyptian pyramids) from a supernatural or new-age perspective…
PYRAMIDOLOGY n. the study of the Egyptian pyramids.
SYNONYMICONSsynonymicons n. Plural of synonymicon.
SYNONYMICON n. a dictionary of synonyms, a thesaurus.

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: 132 words
  • Scrabble in French: 11 words
  • Scrabble in Spanish: no word
  • Scrabble in Italian: no word
  • Scrabble in German: no word
  • Scrabble in Romanian: no word


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