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List of 15-letter words containing

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There are 18 fifteen-letter words containing I, N and 4O

ANDROMONOECIOUSandromonoecious adj. (Botany) Producing both bisexual and male flowers on the same plant.
ANDROMONOECIOUS adj. having hermaphrodite and male flowers on the same plant.
ANTHROPOBIOLOGYanthropobiology n. Bioanthropology.
ANTHROPOBIOLOGY n. the study of human biology.
CHRONOBIOLOGIESchronobiologies n. Plural of chronobiology.
CHRONOBIOLOGY n. the study of biological rhythms.
CHRONOBIOLOGISTchronobiologist n. A person who is involved in chronobiology.
CHRONOBIOLOGIST n. a student of chronobiology.
FLUOROQUINOLONEfluoroquinolone n. Any of a class of antibiotics (fluoro derivatives of quinolone) derived from nalidixic acid.
GEOCHRONOLOGIESgeochronologies n. Plural of geochronology.
GEOCHRONOLOGY n. the study of measuring geological time.
GEOCHRONOLOGISTgeochronologist n. A geologist whose speciality is geochronology.
GEOCHRONOLOGIST n. one who studies geochronology.
GNOTOBIOLOGICALgnotobiological adj. Relating to gnotobiology.
GNOTOBIOLOGICAL adj. related to gnotobiology.
MONOPOLISATIONSMONOPOLISATION n. the act of monopolising, also MONOPOLIZATION.
MONOPOLIZATIONSmonopolizations n. Plural of monopolization.
MONOPOLIZATION n. the act of monopolizing, also MONOPOLISATION.
NITROCHLOROFORMnitrochloroform n. Chlorpicrin.
NITROCHLOROFORM n. a toxic lachrymatory liquid used as a pesticide and a tear gas.
NONCOOPERATIONSnoncooperations n. Plural of noncooperation.
NONCOOPERATION n. failure or refusal to cooperate.
OVERPROPORTIONSoverproportions v. Third-person singular simple present indicative form of overproportion.
OVERPROPORTION v. to make disproportionately large.
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.
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.

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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