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List of 15-letter words containing

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There are 12 fifteen-letter words containing H, 2O, 3S and Y

HYPOSTASISATIONHYPOSTASISATION n. the process of hypostasising, also HYPOSTASIZATION.
PHOTOSYNTHESISEphotosynthesise v. Alternative spelling of photosynthesize.
PHOTOSYNTHESISE v. to carry out photosynthesis.
POLYSACCHAROSESpolysaccharoses n. Plural of polysaccharose.
POLYSACCHAROSE n. any one of a class of carbohydrates whose molecules contain linked monosaccharide units, including starch, inulin, and cellulose.
POSTSYNCHRONISEPOSTSYNCHRONISE v. to add sound, such as dubbing, to a film or video after shooting is completed, also POSTSYNCHRONIZE.
PSYCHOACOUSTICSpsychoacoustics n. The scientific study of all the psychological interactions between humans and the world of sound; includes…
PSYCHOACOUSTICS n. a branch of science dealing with the perception of sound, the sensations produced by sounds, and the problems of communication.
PSYCHOHISTORIESpsychohistories n. Plural of psychohistory.
PSYCHOHISTORY n. historical analysis or interpretation using psychological and psychoanalytic methods.
SCHOOLMISTRESSYschoolmistressy adj. Resembling or characteristic of a schoolmistress.
SCHOOLMISTRESSY adj. like a schoolmistress, prim.
SYMPHYSEOTOMIESSYMPHYSEOTOMY n. the operation of cutting through the pubic symphysis, also SYMPHYSIOTOMY.
SYMPHYSIOTOMIESsymphysiotomies n. Plural of symphysiotomy.
SYMPHYSIOTOMY n. the operation of cutting through the pubic symphysis, also SYMPHYSEOTOMY.
SYNCHRONOSCOPESSYNCHRONOSCOPE n. an instrument used to indicate whether two periodic quantities or motions are synchronous.
SYNCHRONOUSNESSsynchronousness n. Synchronicity.
SYNCHRONOUSNESS n. the state of being synchronous.
TOMBOYISHNESSESTOMBOYISHNESS n. the state of being tomboyish.

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: 64 words
  • Scrabble in French: 15 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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