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List of 13-letter words containing

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There are 19 thirteen-letter words containing N, 2O, P, R and X

APPROXIMATIONapproximation n. The act, process or result of approximating.
approximation n. (Mathematics) An imprecise solution or result that is adequate for a defined purpose.
approximation n. (Medicine) The act of bringing together the edges of tissue to be sutured.
CIPROFLOXACINciprofloxacin n. (Pharmacology) A broad-spectrum fluoroquinolone antibiotic C17H18FN3O3 that is often administered in…
CIPROFLOXACIN n. an antibiotic used against anthrax.
CLINOPYROXENEclinopyroxene n. (Mineralogy) Any pyroxene that has a monoclinic crystal structure.
CLINOPYROXENE n. a member of the pyroxene group of minerals having a monoclinic crystal structure, such as augite, diopside, or jadeite.
ENDOPEROXIDESendoperoxides n. Plural of endoperoxide.
ENDOPEROXIDE n. any of various biosynthetic intermediates in the formation of prostaglandins.
EXPECTORATIONexpectoration n. (Physiology) The action of expectorating, of ejecting phlegm or mucus from the throat or lungs by coughing…
expectoration n. (Physiology) That which is expectorated, as phlegm or mucus.
EXPECTORATION n. the act of expectorating.
EXPLORATIONALexplorational adj. Of, pertaining to, or by means of exploration.
EXPLORATIONAL adj. relating to exploration.
EXPROBRATIONSexprobrations n. Plural of exprobration.
EXPROBRATION n. the act of exprobrating, upbraiding.
EXPROMISSIONSEXPROMISSION n. relieving another person's debt by taking it upon oneself.
EXPROPRIATIONexpropriation n. The act of expropriating; the surrender of a claim to private property; the act of depriving of private…
EXPROPRIATION n. the act of expropriating.
EXTRAPOLATIONextrapolation n. (Mathematics) A calculation of an estimate of the value of some function outside the range of known values.
extrapolation n. An inference about some hypothetical situation based on known facts.
extrapolation n. (Music) The diametric opposite of interpolation.
EXTRAPOSITIONextraposition n. (Linguistics) The movement of an element from its normal place to one at the end, or near the end, of a sentence.
EXTRAPOSITION n. the act of extraposing.
ORTHOPYROXENEorthopyroxene n. (Mineralogy) Any pyroxene that forms orthorhombic crystals.
ORTHOPYROXENE n. a member of the pyroxene group of minerals having an orthorhombic crystal structure, such as enstatite and hypersthene.
OVEREXPANSIONoverexpansion n. Excessive expansion, especially expansion that is not sustainable.
OVEREXPANSION n. excessive expansion.
PEROXIDATIONSperoxidations n. Plural of peroxidation.
PEROXIDATION n. the creation of a peroxide.
PRAXINOSCOPESpraxinoscopes n. Plural of praxinoscope.
PRAXINOSCOPE n. an instrument with mirrors in which a series of moving drawings appear as a continuously moving picture; an early form of cinematograph.
PROPAROXYTONEproparoxytone adj. (Linguistics, of a word) Having the stress or accent on the antepenultimate syllable.
proparoxytone n. (Linguistics) A proparoxytone word.
PROPAROXYTONE n. in ancient Greek, a word having the acute accent on the third last syllable.
PROPOXYPHENESpropoxyphenes n. Plural of propoxyphene.
PROPOXYPHENE n. a narcotic analgesic structurally related to methadone but less addicting.
REEXPLORATIONreexploration n. Exploration again or anew.
REEXPORTATIONreexportation n. Exportation again or anew.
REEXPORTATION n. the act of reexporting.

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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