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There are 8 fifteen-letter words containing I, N, 4O, S and T

CHRONOBIOLOGISTchronobiologist n. A person who is involved in chronobiology.
CHRONOBIOLOGIST n. a student of chronobiology.
GEOCHRONOLOGISTgeochronologist n. A geologist whose speciality is geochronology.
GEOCHRONOLOGIST n. one who studies geochronology.
MONOPOLISATIONSMONOPOLISATION n. the act of monopolising, also MONOPOLIZATION.
MONOPOLIZATIONSmonopolizations n. Plural of monopolization.
MONOPOLIZATION n. the act of monopolizing, also MONOPOLISATION.
NONCOOPERATIONSnoncooperations n. Plural of noncooperation.
NONCOOPERATION n. failure or refusal to cooperate.
OVERPROPORTIONSoverproportions v. Third-person singular simple present indicative form of overproportion.
OVERPROPORTION v. to make disproportionately large.
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.
PHOTOOXIDATIONSphotooxidations n. Plural of photooxidation.
PHOTOOXIDATION n. oxidation under the influence of radiant energy, as light.

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 1Word.ws and WikWik.org.

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See this list for:

  • English Wiktionary: 114 words
  • Scrabble in French: 13 words
  • Scrabble in Spanish: 10 words
  • Scrabble in Italian: 18 words
  • Scrabble in German: no word
  • Scrabble in Romanian: 11 words


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