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List of 13-letter words containing

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There are 18 thirteen-letter words containing H, I, O, P, S, U and Y

ANISOPHYLLOUSanisophyllous adj. (Botany) Having unequal leaves.
ANISOPHYLLOUS adj. of leaves, usually a pair, of differing size and shape.
HYDROSULPHIDEhydrosulphide n. (Britain) Alternative spelling of hydrosulfide.
HYDROSULPHIDE n. a compound formed by action of hydrogen sulphide on a hydroxide.
HYDROSULPHITEhydrosulphite n. Alternative spelling of hydrosulfite.
HYDROSULPHITE n. a salt of hydrosulphurous acid; esp. the sodium salt, used as a reagent.
HYPERCAUTIOUShypercautious adj. Especially or unreasonably cautious.
HYPERCAUTIOUS adj. excessively cautious.
HYPOSULPHITEShyposulphites n. Plural of hyposulphite.
HYPOSULPHITE n. a salt of hyposulphurous acid.
HYPOSULPHURIChyposulphuric adj. Alternative spelling of hyposulfuric.
HYPOSULPHURIC adj. denoting a kind of acid.
MICROPHYLLOUSmicrophyllous adj. (Phytotomy) Of or having microphyll leaves.
MICROPHYLLOUS adj. having minute leaves.
MUSICOTHERAPYmusicotherapy n. Music therapy; the use of music to improve health.
MUSICOTHERAPY n. therapy involving the use of music.
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.
PYROSULPHURICpyrosulphuric adj. (Britain) Alternative spelling of pyrosulfuric.
PYROSULPHURIC adj. as in pyrosulphuric acid, a type of acid.
SCEUOPHYLACIASCEUOPHYLACIUM n. a sacristy.
SURVEYORSHIPSsurveyorships n. Plural of surveyorship.
SURVEYORSHIP n. the office of surveyor.
SYMPHONIOUSLYsymphoniously adv. In a symphonious manner.
SYMPHONIOUS adv. agreeing esp. in sound.
UPRIGHTEOUSLYuprighteously adv. In an uprighteous or just manner.
UPRIGHTEOUSLY adv. (Shakespeare) with moral right.
XIPHOPHYLLOUSxiphophyllous adj. (Botany) Having sword-shaped leaves.
XIPHOPHYLLOUS adj. having sword-shaped leaves.

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: 90 words
  • Scrabble in French: 40 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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