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List of 13-letter words containing

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There are 14 thirteen-letter words containing A, I, O, 2S, U and Y

ANISOPHYLLOUSanisophyllous adj. (Botany) Having unequal leaves.
ANISOPHYLLOUS adj. of leaves, usually a pair, of differing size and shape.
AUTOCATALYSISautocatalysis n. (Chemistry) catalysis of a reaction by one of its products.
AUTOCATALYSIS n. the catalysis of a reaction by a product of that reaction.
ERYSIPELATOUSerysipelatous adj. Resembling erysipelas.
ERYSIPELATOUS adj. suffering from the skin disease erysipelas.
FISSIPAROUSLYfissiparously adv. In a fissiparous manner.
FISSIPAROUS adv. producing new biological units or individuals by fission, as with most strains of bacteria.
HALFSERIOUSLYHALFSERIOUSLY adv. in a partially joking way.
ICHTHYOSAURUSichthyosaurus n. (Archaic) Alternative form of ichthyosaur.
ichthyosaurus n. Any members of the genus Ichthyosaurus.
Ichthyosaurus prop.n. A taxonomic genus within the family Ichthyosauridae – large, extinct marine reptiles.
PNEUMATOLYSISpneumatolysis n. (Geology) the alteration of rocks and minerals by gases or magmatic fluid within volcanos etc.
PNEUMATOLYSIS n. the destructive action of the hot vapours of magma on igneous rock.
PRASEODYMIUMSpraseodymiums n. Plural of praseodymium.
PRASEODYMIUM n. a chemical element, a metal with green salts, isolated from the once-supposed element didymium.
PRESBYACOUSISPRESBYACOUSIS n. progressive loss of hearing with advancing old age, also PRESBYACUSIS, PRESBYCOUSIS, PRESBYCUSIS.
PROGYMNASIUMSPROGYMNASIUM n. in Germany, a gymnasium for pupils up to age 16 only, at which university entrance qualifications are not obtainable.
SUBVERSIONARYsubversionary adj. Promoting destruction.
SUBVERSIONARY n. a subversive person.
SUPERLOYALISTsuperloyalist n. A very committed loyalist.
SUPERLOYALIST n. an extreme loyalist.
VOLUNTARYISMSvoluntaryisms n. Plural of voluntaryism.
VOLUNTARYISM n. the principle or practice of reliance on voluntary action, not coercion.
VOLUNTARYISTSvoluntaryists n. Plural of voluntaryist.
VOLUNTARYIST n. a believer in voluntaryism.

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: 91 words
  • Scrabble in French: 49 words
  • Scrabble in Spanish: 26 words
  • Scrabble in Italian: no word
  • Scrabble in German: no word
  • Scrabble in Romanian: no word


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