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List of 15-letter words containing

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There are 13 fifteen-letter words containing 4O, P and 2T

CRYPTOZOOLOGISTcryptozoologist n. (Cryptozoology) One who studies cryptozoology.
CRYPTOZOOLOGIST n. one who studies cryptozoology.
PHOTOAUTOTROPHSphotoautotrophs n. Plural of photoautotroph.
PHOTOAUTOTROPH n. an organism capable of synthesizing its own food from inorganic substances using light as an energy source.
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.
PHOTOCONDUCTORSphotoconductors n. Plural of photoconductor.
PHOTOCONDUCTOR n. a photoconductive substance.
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.
PHOTOTOPOGRAPHYphototopography n. The surveying and mapping of a terrain based solely on terrestrial photographs.
PHOTOTOPOGRAPHY n. the preparation of topographic maps from photographs.
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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