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There are 19 words containing I, 4O, P and 2T

OPISTHOTONOSopisthotonos n. (Medicine) Sustained tetanic spasm in which the body is bent backwards and stiffened, as produced by various diseases.
OPISTHOTONOS n. extreme arching backwards of the spine and neck as a result of spasm of the muscles in that region, etc.
OSTEOPOROTICosteoporotic adj. Relating to osteoporosis.
OSTEOPOROTIC adj. relating to osteoporosis.
ONOMATOPOETIConomatopoetic adj. (Uncommon) Synonym of onomatopoeic.
ONOMATOPOETIC adj. onomatopoeic.
OPISTHOTONOSESOPISTHOTONOS n. extreme arching backwards of the spine and neck as a result of spasm of the muscles in that region, etc.
PHOTOBIOLOGISTphotobiologist n. A biologist whose speciality is photobiology.
PHOTOBIOLOGIST n. one who studies photobiology.
PHOTOGEOLOGISTphotogeologist n. One who carries out photogeology.
PHOTOGEOLOGIST n. one who studies photogeology.
PHOTOOXIDATIONphotooxidation n. (Physics, chemistry) The loss of an electron from a photoexcited species.
photooxidation n. (Chemistry) The reaction of something with oxygen in the presence of light.
PHOTOOXIDATION n. oxidation under the influence of radiant energy, as light.
PROTOZOOLOGISTprotozoologist n. A zoologist whose speciality is protozoology.
PROTOZOOLOGIST n. one who studies protozoology.
ZOOPHYTOLOGISTzoophytologist n. One who studies zoophytology.
ZOOPHYTOLOGIST n. one who studies zoophytes.
CRYPTOZOOLOGISTcryptozoologist n. (Cryptozoology) One who studies cryptozoology.
CRYPTOZOOLOGIST n. one who studies cryptozoology.
PHOTOBIOLOGISTSphotobiologists n. Plural of photobiologist.
PHOTOBIOLOGIST n. one who studies photobiology.
PHOTOCONDUCTIONphotoconduction n. A change (normally an increase) in the electrical conductivity of a material as a result of incident…
PHOTOCONDUCTION n. conduction of electricity resulting from the absorption of light.
PHOTOGEOLOGISTSphotogeologists n. Plural of photogeologist.
PHOTOGEOLOGIST n. one who studies photogeology.
PHOTOIONISATIONphotoionisation n. (Physics) The ejection of electrons from an atom or other species following the absorption of photons.
PHOTOIONISATION n. ionization (as in the ionosphere) of a molecule or atom caused by absorption of radiant energy, also PHOTOIONIZATION.
PHOTOIONIZATIONphotoionization n. Alternative spelling of photoionisation.
PHOTOIONIZATION n. ionization (as in the ionosphere) of a molecule or atom caused by absorption of radiant energy, also PHOTOIONISATION.
PHOTOOXIDATIONSphotooxidations n. Plural of photooxidation.
PHOTOOXIDATION n. oxidation under the influence of radiant energy, as light.
PHOTOPRODUCTIONphotoproduction n. (Chemistry) The production of a molecular species (e.g. a radical or ion) by means of light.
PHOTOPRODUCTION n. the production of one or more particles by the action of an incident photon.
PROTOZOOLOGISTSprotozoologists n. Plural of protozoologist.
PROTOZOOLOGIST n. one who studies protozoology.
ZOOPHYTOLOGISTSzoophytologists n. Plural of zoophytologist.
ZOOPHYTOLOGIST n. one who studies zoophytes.

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: 772 words
  • Scrabble in French: 15 words
  • Scrabble in Spanish: 9 words
  • Scrabble in Italian: 43 words
  • Scrabble in German: no word
  • Scrabble in Romanian: 55 words


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