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List of 9-letter words containing

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There are 11 nine-letter words containing I, 3O, P and T

COOPTIONScooptions n. Plural of cooption.
co-options n. Plural of co-option.
COOPTION n. the act of coopting, also COOPTATION.
HOROPITOSHOROPITO n. (Maori) a bushy New Zealand shrub, with red aromatic peppery leaves.
IONOTROPYionotropy n. (Chemistry) A form of tautomerism involving the movement or redistribution of charges.
ionotropy n. (Physiology) The regulation of neurotransmitters or cell receptors by ion channels.
IONOTROPY n. the reversible interconversion of a pair of organic isomers.
NOOTROPICnootropic n. (Medicine) Any substance purported to increase or enhance cognitive abilities.
nootropic n. (Pharmacology) A drug that enhances learning and memory and lacks the usual pharmacology of other psychotropic…
NOOTROPIC adj. acting on the mind.
OCTOPLOIDoctoploid adj. (Genetics) having eight complete sets of chromosomes in a single cell.
octoploid n. (Biology) a cell that has eight complete sets of chromosomes.
octoploid n. (Biology) an organism whose cells have eight complete sets of chromosomes.
OTOSCOPICotoscopic adj. Relating to otoscopy or otoscopes.
OTOSCOPIC adj. relating to otoscopy, the examination of the ear.
PILOMOTORpilomotor adj. Relating to the goose flesh reflex.
PILOMOTOR adj. causing movement of hairs, as in pilomotor nerves.
PORTFOLIOportfolio n. A case for carrying papers, drawings, photographs, maps and other flat documents.
portfolio n. (By extension) The collection of such documents, especially the works of an artist or photographer.
portfolio n. (Politics) The post and the responsibilities of a cabinet minister or other head of a government department.
PROMOTIONpromotion n. An advancement in rank or position.
promotion n. Dissemination of information in order to increase its popularity.
promotion n. (Marketing) An event intended to increase the reach or image of a product or brand.
PROTOZOICprotozoic adj. Of or relating to the protozoa.
PROTOZOIC adj. of or pertaining to the protozoa.
TOPOLOGICtopologic adj. Of or relating to topology; topological.
TOPOLOGIC adj. relating to topology, also TOPOLOGICAL.

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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