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List of 13-letter words containing

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There are 9 thirteen-letter words containing H, I, O, R, X and Y

EXOTHERMICITYexothermicity n. (Chemistry, physics, uncountable) The quality or state of being exothermic.
exothermicity n. (Countable) The release of heat during an exothermic reaction.
EXOTHERMICITY n. the state of being exothermic.
HYDROPEROXIDEhydroperoxide n. (Organic chemistry) any mono-substituted derivative of hydrogen peroxide - ROOH.
HYDROPEROXIDE n. a compound containing an O2H group.
HYDROXYACETICHYDROXYACETIC adj. as in hydroxyacetic acid, another name for glycolic acid.
HYDROXYCITRICHYDROXYCITRIC adj. as in hydroxycitric acid, an extract of the plant garcinia.
HYDROXYLAMINEhydroxylamine n. (Inorganic chemistry) An explosive inorganic derivative of ammonia, NH2OH, used as a reducing agent…
hydroxylamine n. (Organic chemistry) Any organic derivative of this compound.
HYDROXYLAMINE n. a colorless odorless nitrogenous base that resembles ammonia in its reactions.
HYDROXYLATINGhydroxylating v. Present participle of hydroxylate.
HYDROXYLATE v. to introduce hydroxyl into.
HYDROXYLATIONhydroxylation n. (Organic chemistry) The introduction of a hydroxyl group into a molecule, especially by the replacement…
HYDROXYLATION n. the act of hydroxylating.
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.
XYLOGRAPHICALxylographical adj. Xylographic.
XYLOGRAPHICAL adj. relating to xylography, the art of making engravings on wood, also XYLOGRAPHIC.

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: 82 words
  • Scrabble in French: 8 words
  • Scrabble in Spanish: no word
  • Scrabble in Italian: no word
  • Scrabble in German: no word
  • Scrabble in Romanian: no word


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