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There are 19 thirteen-letter words containing H, 2O, P, R, 2S and Y

HYDROTROPISMShydrotropisms n. Plural of hydrotropism.
HYDROTROPISM n. growth in the direction of water.
HYLOMORPHISMShylomorphisms n. Plural of hylomorphism.
HYLOMORPHISM n. the belief that matter is the cause of the universe.
HYPERLORDOSESSorry, definition not available.
HYPERLORDOSIShyperlordosis n. (Pathology) Particularly severe lordosis.
HYSTEROSCOPEShysteroscopes n. Plural of hysteroscope.
HYSTEROSCOPIChysteroscopic adj. Relating to hysteroscopy.
NARCOHYPNOSESNARCOHYPNOSIS n. the use of narcotics to produce hypnosis.
NARCOHYPNOSISnarcohypnosis n. A hypnotic state induced by narcotics.
NARCOHYPNOSIS n. the use of narcotics to produce hypnosis.
PHOSPHORYLASEphosphorylase n. (Biochemistry) Any enzyme that catalyzes the production of glucose phosphate from glycogen and inorganic phosphate.
PHOSPHORYLASE n. any of the enzymes that catalyze phosphorolysis with the formation of organic phosphates.
POLYHISTORIESPOLYHISTORY n. great and varied learning.
POLYMORPHISMSpolymorphisms n. Plural of polymorphism.
POLYMORPHISM n. the circumstance in which two minerals with different crystalline structures have identical chemical compositions, e.g. diamond and graphite.
PORPHYROPSINSporphyropsins n. Plural of porphyropsin.
PORPHYROPSIN n. a purple pigment in the retinal rods of freshwater fishes that resembles rhodopsin.
PSYCHOHISTORYpsychohistory n. (Psychology, historiography) The scientific study of psychology and motivation in history.
psychohistory n. (Science fiction) A fictional mathematical statistical science of large population dynamics, where mathematical…
PSYCHOHISTORY n. historical analysis or interpretation using psychological and psychoanalytic methods.
PSYCHOSURGEONpsychosurgeon n. One who carries out psychosurgery.
PSYCHOSURGEON n. a practitioner of psychosurgery.
PSYCHOTROPICSpsychotropics n. Plural of psychotropic.
PSYCHOTROPIC n. a drug acting on the mind.
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.
SYNCHROSCOPESsynchroscopes n. Plural of synchroscope.
SYNCHROSCOPE n. an instrument for detecting whether two moving parts are synchronized.
ZYGOMORPHISMSZYGOMORPHISM n. the state of being zygomorphic, bilaterally symmetrical.

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: 71 words
  • Scrabble in French: 12 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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