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There are 11 twelve-letter words containing I, O, P, S, U and X

AUXOTROPHIESauxotrophies n. Plural of auxotrophy.
AUXOTROPHY n. the state of being auxotrophic, requiring a specific growth substance beyond the minimum required for normal metabolism.
EXCULPATIONSexculpations n. Plural of exculpation.
EXCULPATION n. the act of exculpating.
EXECUTORSHIPexecutorship n. The office or position of an executor.
EXECUTORSHIP n. the office of executor.
EXPUGNATIONSexpugnations n. Plural of expugnation.
EXPUGNATION n. the act of expugning.
EXPURGATIONSexpurgations n. Plural of expurgation.
EXPURGATION n. the act of expurgating.
ISOXSUPRINESISOXSUPRINE n. a drug which dilates blood vessels, used to inhibit contractions in premature labour and in the treatment of arteriosclerosis.
MULTIPLEXORSmultiplexors n. Plural of multiplexor.
MULTIPLEXOR n. a device enabling a computer to transmit data to many terminals by switching quickly from one user's data to another, also MULTIPLEXER.
OXYSULPHIDESoxysulphides n. Plural of oxysulphide.
OXYSULPHIDE n. a compound containing an element combined with oxygen and sulphur.
PYRRHULOXIASpyrrhuloxias n. Plural of pyrrhuloxia.
PYRRHULOXIA n. a grey-and-pink crested bunting of Central and SW North America, with a short parrot-like bill.
SULPHADOXINEsulphadoxine n. Alternative spelling of sulfadoxine.
SULPHADOXINE n. an antibiotic drug of the sulphonamide group, commonly used in combination with pyrimethamine to treat malaria, also SULFADOXINE.
XIPHOPAGUSESXIPHOPAGUS n. a set of Siamese twins joined in the region of the xiphoid cartilage.

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: 58 words
  • Scrabble in French: 27 words
  • Scrabble in Spanish: 7 words
  • Scrabble in Italian: no word
  • Scrabble in German: no word
  • Scrabble in Romanian: 7 words


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