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List of 13-letter words containing

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There are 18 thirteen-letter words containing E, O, P, R, X and Y

APPROXIMATELYapproximately adv. Imprecise but close to in quantity or amount.
APPROXIMATE adv. close together.
ARCHAEOPTERYXarchaeopteryx n. Alternative spelling of archeopteryx.
Archaeopteryx prop.n. A taxonomic genus within the family Archaeopterygidae – known from fossils and widely accepted as the…
archæopteryx n. Rare spelling of archeopteryx.
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.
EXPEDITIONARYexpeditionary adj. Of or pertaining to an expedition.
expeditionary adj. (Military) Intended for military operations abroad.
expeditionary n. (Chiefly in the plural) One who goes on expeditions, especially one who is a member of an expeditionary…
EXPLANATORILYexplanatorily adv. With regard to explanation, or explanatory power.
EXPLANATORY adv. serving to explain, also EXPLANATIVE.
EXPLORATIVELYexploratively adv. In an explorative way or fashion.
EXPLORATIVE adv. serving to explore.
EXPORTABILITYexportability n. The property of being exportable.
EXPORTABILITY n. the state of being exportable.
EXPOSTULATORYexpostulatory adj. Of, characterized by, or exhibiting expostulation.
EXPOSTULATORY adj. relating to expostulation, also EXPOSTULATIVE.
EXTEMPORARILYextemporarily adv. In an extemporary manner.
EXTEMPORARY adv. unpremeditated; esp. of prayer, discourse, composition, etc., also EXTEMPORANEOUS, EXTEMPORE.
EXTRAPOLATORYextrapolatory adj. Serving to extrapolate.
EXTRAPOLATORY adj. of or like an extrapolation.
HYDROPEROXIDEhydroperoxide n. (Organic chemistry) any mono-substituted derivative of hydrogen peroxide - ROOH.
HYDROPEROXIDE n. a compound containing an O2H group.
HYPERPROSEXIAhyperprosexia n. (Medicine, rare) Excessive attention; an abnormal state in which a person concentrates on one thing…
HYPERPROSEXIA n. abnormal powers of perception, as in Australian aboriginal trackers.
HYPOPHARYNXEShypopharynxes n. Plural of hypopharynx.
HYPOPHARYNX n. an appendage or thickened fold on the floor of the mouth of many insects that resembles a tongue.
NASOPHARYNXESnasopharynxes n. Plural of nasopharynx.
NASOPHARYNX n. the upper part of the pharynx continuous with the nasal passages.
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.
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.
PYRIDOXAMINESpyridoxamines n. Plural of pyridoxamine.
PYRIDOXAMINE n. a crystalline amine of the vitamin B6 group.

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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See this list for:

  • English Wiktionary: 137 words
  • Scrabble in French: 15 words
  • Scrabble in Spanish: 3 words
  • Scrabble in Italian: 1 word
  • Scrabble in German: no word
  • Scrabble in Romanian: no word


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