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There are 10 thirteen-letter words containing O, P, R, 3S, T and Y

CRYPTOSYSTEMScryptosystems n. Plural of cryptosystem.
HYPOTHESISERShypothesisers n. Plural of hypothesiser.
HYPOTHESISER n. one who hypothesises, also HYPOTHESIZER.
HYPSOMETRISTSHYPSOMETRIST n. a practitioner of hypsometry, the measuring the heights of places on the earth's surface.
HYSTEROSCOPEShysteroscopes n. Plural of hysteroscope.
PROSELYTISERSproselytisers n. Plural of proselytiser.
PROSELYTISER n. one who proselytises, also PROSELYTIZER.
SAPROPHYTISMSSAPROPHYTISM n. being a saprophyte.
SPHEROCYTOSESspherocytoses n. Plural of spherocytosis.
SPHEROCYTOSIS n. the presence of spherocytes in the blood, as in certain haemolytic anaemias.
SPHEROCYTOSISspherocytosis n. (Pathology) A medical condition in which the red blood cells are globular spheres, rather than having…
SPHEROCYTOSIS n. the presence of spherocytes in the blood, as in certain haemolytic anaemias.
STEREOTYPISTSstereotypists n. Plural of stereotypist.
STEREOTYPIST n. one who makes stereotypes.
STREPTOLYSINSstreptolysins n. Plural of streptolysin.
STREPTOLYSIN n. an antigenic hemolysin produced by streptococci.

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: 34 words
  • Scrabble in French: 6 words
  • Scrabble in Spanish: 1 word
  • Scrabble in Italian: no word
  • Scrabble in German: no word
  • Scrabble in Romanian: no word


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