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List of 13-letter words containing

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There are 13 thirteen-letter words containing 3O, P, S, T and Y

ANTHROPOSOPHYanthroposophy n. (Archaic, as used before Rudolf Steiner) Knowledge or understanding of human nature.
anthroposophy n. A philosophy founded in the early 20th century by the esotericist Rudolf Steiner (also capitalized as…
Anthroposophy prop.n. Alternative letter-case form of anthroposophy.
HYPOTROCHOIDShypotrochoids n. Plural of hypotrochoid.
HYPOTROCHOID n. the curve traced by a point on the radius, or radius produced, of a circle rolling within another circle.
MICROPOROSITYmicroporosity n. The state of being microporous.
MICROPOROSITY n. the property of micropores, very small pores.
MONOPHYODONTSmonophyodonts n. Plural of monophyodont.
MONOPHYODONT n. an animal with only one set of teeth.
OMOPLATOSCOPYomoplatoscopy n. Divination by use of a shoulder blade.
OMOPLATOSCOPY n. divination by observing the cracks in a burning shoulder-blade.
PHOTOCOPYINGSphotocopyings n. Plural of photocopying.
PHOTOCOPYING n. the act of making a photocopy.
PHOTOPOLYMERSphotopolymers n. Plural of photopolymer.
PHOTOPOLYMER n. a photosensitive plastic used esp. in the manufacture of printing plates.
PHYTOHORMONESphytohormones n. Plural of phytohormone.
PHYTOHORMONE n. a plant hormone, regulating growth.
POLYCHOTOMIESpolychotomies n. Plural of polychotomy.
POLYCHOTOMY n. division into many parts, e.g. on a cladogram.
POLYCHOTOMOUSpolychotomous adj. Divisible or separable into multiple groups or pieces.
POLYCHOTOMOUS adj. dividing or marked by division into many parts, branches, or classes.
PROTEROGYNOUSproterogynous adj. (Botany) Having the pistil come to maturity before the stamens; protogynous.
PROTEROGYNOUS adj. exhibiting proterogyny.
PYTHONOMORPHSpythonomorphs n. Plural of pythonomorph.
PYTHONOMORPH n. a large marine reptile of the Cretaceous period, with long, scaly body and paddle-shaped limbs.
RONTGENOSCOPYRONTGENOSCOPY n. observation by means of X-rays.

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: 83 words
  • Scrabble in French: 9 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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