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List of 13-letter words containing

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There are 11 thirteen-letter words containing 2O, P, X and Y

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.
EXPOSTULATORYexpostulatory adj. Of, characterized by, or exhibiting expostulation.
EXPOSTULATORY adj. relating to expostulation, also EXPOSTULATIVE.
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.
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.
PHOTOTOXICITYphototoxicity n. Any adverse effect due to exposure to light, especially such effects on the skin.
PHOTOTOXICITY n. the state of being phototoxic.
PHYTOTOXICITYphytotoxicity n. (Uncountable) The condition of being phytotoxic.
phytotoxicity n. (Countable) A measure of the extent to which something is phytotoxic.
PHYTOTOXICITY n. the state of being phytotoxic.
POLYSILOXANESpolysiloxanes n. Plural of polysiloxane.
POLYSILOXANE n. any of a number of polymers which are the basis of silicone chemistry.
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.
XIPHOPHYLLOUSxiphophyllous adj. (Botany) Having sword-shaped leaves.
XIPHOPHYLLOUS adj. having sword-shaped leaves.

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: 124 words
  • Scrabble in French: 9 words
  • Scrabble in Spanish: 4 words
  • Scrabble in Italian: no word
  • Scrabble in German: no word
  • Scrabble in Romanian: no word


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