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List of 12-letter words containing

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There are 18 twelve-letter words containing I, 2O, P, R and X

AUXOTROPHIESauxotrophies n. Plural of auxotrophy.
AUXOTROPHY n. the state of being auxotrophic, requiring a specific growth substance beyond the minimum required for normal metabolism.
DOXOGRAPHIESdoxographies n. Plural of doxography.
DOXOGRAPHY n. the compilation of opinions on philosophers.
ENDOPEROXIDEendoperoxide n. (Chemistry, biochemistry) Any heterocycle containing a peroxide -O-O- residue in the ring; found especially…
ENDOPEROXIDE n. any of various biosynthetic intermediates in the formation of prostaglandins.
EXPLORATIONSexplorations n. Plural of exploration.
EXPLORATION n. the act or an instance of exploring.
EXPORTATIONSexportations n. Plural of exportation.
EXPORTATION n. the act of exporting.
EXPOSITORILYexpositorily adv. In an expository fashion.
EXPOSITORY adv. pertaining to, or containing, exposition.
EXPROBRATIONexprobration n. (Obsolete) Reproachful accusation; upbraiding.
EXPROBRATION n. the act of exprobrating, upbraiding.
EXPROMISSIONexpromission n. (Law) The intervention of a new debtor, substituted for the former one, who is consequently discharged…
EXPROMISSION n. relieving another person's debt by taking it upon oneself.
EXPROMISSORSexpromissors n. Plural of expromissor.
EXPROMISSOR n. a person relieving another of debt by taking it upon himself.
EXPROPRIATORexpropriator n. Agent noun of expropriate; one who expropriates.
EXPROPRIATOR n. one who expropriates.
ORTHOPRAXIESORTHOPRAXY n. the treatment of deformities in the human body by mechanical appliances.
OVEREXPLOITSoverexploits v. Third-person singular simple present indicative form of overexploit.
OVEREXPLOIT v. to exploit to excess.
OVEREXPOSINGoverexposing v. Present participle of overexpose.
OVEREXPOSE v. to expose excessively.
PEROXIDATIONperoxidation n. (Chemistry) Any oxidation reaction, especially of an oxide, that produces a peroxide.
peroxidation n. (Organic chemistry) The reaction of a double bond with a peroxide.
PEROXIDATION n. the creation of a peroxide.
PRAXEOLOGIESpraxeologies n. Plural of praxeology.
PRAXEOLOGY n. the study of human action and conduct.
PRAXINOSCOPEpraxinoscope n. (Historical) An animation device invented in 1877 and used in early image projection. It consisted of…
PRAXINOSCOPE n. an instrument with mirrors in which a series of moving drawings appear as a continuously moving picture; an early form of cinematograph.
PROXIMATIONSproximations n. Plural of proximation.
PROXIMATION n. immediate nearness in time, place, relationship, etc., also PROXIMITY.
THIXOTROPIESTHIXOTROPY n. the property of certain gels of becoming fluid when agitated and of reverting back to a gel when left to stand.

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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