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List of 13-letter words containing

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There are 10 thirteen-letter words containing I, 2O, P, R, S and X

ENDOPEROXIDESendoperoxides n. Plural of endoperoxide.
ENDOPEROXIDE n. any of various biosynthetic intermediates in the formation of prostaglandins.
EXPROBRATIONSexprobrations n. Plural of exprobration.
EXPROBRATION n. the act of exprobrating, upbraiding.
EXPROMISSIONSEXPROMISSION n. relieving another person's debt by taking it upon oneself.
EXPROPRIATORSexpropriators n. Plural of expropriator.
EXPROPRIATOR n. one who expropriates.
EXTRAPOSITIONextraposition n. (Linguistics) The movement of an element from its normal place to one at the end, or near the end, of a sentence.
EXTRAPOSITION n. the act of extraposing.
OVEREXPANSIONoverexpansion n. Excessive expansion, especially expansion that is not sustainable.
OVEREXPANSION n. excessive expansion.
PEROXIDATIONSperoxidations n. Plural of peroxidation.
PEROXIDATION n. the creation of a peroxide.
PRAXINOSCOPESpraxinoscopes n. Plural of praxinoscope.
PRAXINOSCOPE n. an instrument with mirrors in which a series of moving drawings appear as a continuously moving picture; an early form of cinematograph.
PROLOCUTRIXESPROLOCUTRIX n. a spokesman, a chairwoman, esp. of the lower house of Convocation.
PROTOGALAXIESprotogalaxies n. Plural of protogalaxy.
PROTOGALAXY n. a galaxy in its initial state of formation.

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: 69 words
  • Scrabble in French: 16 words
  • Scrabble in Spanish: 38 words
  • Scrabble in Italian: no word
  • Scrabble in German: no word
  • Scrabble in Romanian: no word


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