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There are 7 fifteen-letter words containing H, 3I, 3O and S

DICHOTOMISATIONdichotomisation n. Alternative spelling of dichotomization.
DICHOTOMISATION n. the act of dichotomising, also DICHOTOMIZATION.
HOMOSOCIALITIEShomosocialities n. Plural of homosociality.
HOMOSOCIALITY n. the state of being homosocial.
PHOTOIONISATIONphotoionisation n. (Physics) The ejection of electrons from an atom or other species following the absorption of photons.
PHOTOIONISATION n. ionization (as in the ionosphere) of a molecule or atom caused by absorption of radiant energy, also PHOTOIONIZATION.
PHOTOTOXICITIESphototoxicities n. Plural of phototoxicity.
PHOTOTOXICITY n. the state of being phototoxic.
SOCIOHISTORICALsociohistorical adj. Of or pertaining to social and historical factors.
socio-historical adj. Alternative form of sociohistorical.
SOCIOHISTORICAL adj. of, relating to, or involving social history or a combination of social and historical factors.
STOICHEIOLOGIESSTOICHEIOLOGY n. the branch of biology that deals with the elements comprising animal tissues, also STOECHIOLOGY.
STOICHIOLOGICALstoichiological adj. Of or relating to the science of stoichiology.
STOICHIOLOGICAL adj. related to stoichiology.

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: 24 words
  • Scrabble in French: 3 words
  • Scrabble in Spanish: 3 words
  • Scrabble in Italian: 10 words
  • Scrabble in German: no word
  • Scrabble in Romanian: 40 words


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