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List of 13-letter words containing

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There are 13 thirteen-letter words containing H, I, O, 2S, U and Y

ANISOPHYLLOUSanisophyllous adj. (Botany) Having unequal leaves.
ANISOPHYLLOUS adj. of leaves, usually a pair, of differing size and shape.
DEINONYCHUSESdeinonychuses n. Plural of deinonychus.
DEINONYCHUS n. any of a genus of small bipedal carnivorous theropod dinosaurs from the Cretaceous.
HALFSERIOUSLYHALFSERIOUSLY adv. in a partially joking way.
HYPOSULPHITEShyposulphites n. Plural of hyposulphite.
HYPOSULPHITE n. a salt of hyposulphurous acid.
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.
ISOCHRONOUSLYisochronously adv. In an isochronous manner.
ISOCHRONOUS adv. having the same duration; recurring at equal intervals.
MISCHIEVOUSLYmischievously adv. In a mischievous manner.
MISCHIEVOUS adv. given to mischief.
NEUROSYPHILISneurosyphilis n. (Pathology) A syphilis infection affecting the nervous system.
NEUROSYPHILIS n. a syphilitic infection affecting the central nervous system.
PHYSIOLOGUSESPHYSIOLOGUS n. a work containing descriptions of animals; a bestiary.
PHYSOCLISTOUSphysoclistous adj. Relating to physoclists.
PHYSOCLISTOUS adj. of fishes, having an air bladder that is not connected to the alimentary canal.
POLYSULPHIDESpolysulphides n. Plural of polysulphide.
POLYSULPHIDE n. a sulfide containing two or more atoms of sulfur in the molecule, also POLYSULFIDE.
SURVEYORSHIPSsurveyorships n. Plural of surveyorship.
SURVEYORSHIP n. the office of surveyor.
SYMPHONIOUSLYsymphoniously adv. In a symphonious manner.
SYMPHONIOUS adv. agreeing esp. in sound.

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


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