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There are 12 fifteen-letter words containing H, 4O and 2S

HOMOEOMORPHISMShomoeomorphisms n. Plural of homoeomorphism.
HOMOEOMORPHISM n. the state of being homoeomorphic.
HYPOPHOSPHOROUShypophosphorous adj. (Chemistry) Of or pertaining to hypophosphorous acid or its derivatives.
HYPOPHOSPHOROUS adj. as in hypophosphorous acid, a monobasic acid and a reducing agent.
OESOPHAGOSCOPESoesophagoscopes n. Plural of oesophagoscope.
OESOPHAGOSCOPE n. an instrument for examining the oesophagus.
OOPHORECTOMISESOOPHORECTOMISE v. to perform an oophorectomy, removal of one or both ovaries, also OOPHORECTOMIZE.
PHOSPHOROSCOPESphosphoroscopes n. Plural of phosphoroscope.
PHOSPHOROSCOPE n. an instrument for measuring the duration of phosphorescence after the source of radiation causing it has been removed.
PHOTOBIOLOGISTSphotobiologists n. Plural of photobiologist.
PHOTOBIOLOGIST n. one who studies photobiology.
PHOTOGEOLOGISTSphotogeologists n. Plural of photogeologist.
PHOTOGEOLOGIST n. one who studies photogeology.
PSYCHOSOCIOLOGYpsychosociology n. The study of psychosocial development.
PSYCHOSOCIOLOGY n. the study of how psychological and sociological factors combine.
ZOOPHYSIOLOGIESZOOPHYSIOLOGY n. the study of animal physiology.
ZOOPHYSIOLOGISTzoophysiologist n. One who studies zoophysiology.
ZOOPHYSIOLOGIST n. a student of animal physiology.
ZOOPHYTOLOGISTSzoophytologists n. Plural of zoophytologist.
ZOOPHYTOLOGIST n. one who studies zoophytes.
ZOOPSYCHOLOGIESzoöpsychologies n. Plural of zoöpsychology.
ZOOPSYCHOLOGY n. the psychology of the lower animals.

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: 63 words
  • Scrabble in French: 13 words
  • Scrabble in Spanish: 1 word
  • Scrabble in Italian: no word
  • Scrabble in German: no word
  • Scrabble in Romanian: 9 words


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