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List of 13-letter words containing

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There are 8 thirteen-letter words containing A, 2I, 2O, P, R and Y

COOPERATIVITYcooperativity n. (Biochemistry) An interaction between the substrate binding sites of an allosteric enzyme in which binding…
COOPERATIVITY n. the state of being cooperative.
IMPROVISATORYimprovisatory adj. Of, pertaining to, or in the nature of improvisation.
IMPROVISATORY adj. of or like an improvisator.
ISOTROPICALLYisotropically adv. In an isotropic manner; so as to exhibit the same properties or behavior in all directions.
ISOTROPIC adv. having the same properties in every direction, also ISOTROPOUS.
OVOVIVIPARITYovoviviparity n. The condition of being ovoviviparous.
OVOVIVIPARITY n. the state of being ovoviviparous.
POLYHISTORIANpolyhistorian n. Synonym of polyhistor.
POLYHISTORIAN n. a person of great and varied learning, also POLYHISTOR.
PROMOTABILITYpromotability n. The ability to be promoted (in any sense).
PROMOTABILITY n. the state of being promotable.
PROVISIONALLYprovisionally adv. In a provisional way; temporarily.
PROVISIONAL adv. temporary.
SOPORIFICALLYsoporifically adv. In a soporific manner.
SOPORIFIC adv. tending to produce sleep.

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: 38 words
  • Scrabble in French: 2 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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