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 There are 9 thirteen-letter words containing H, I, L, R, T and X| EXHILARATIONS | • exhilarations n. Plural of exhilaration. • EXHILARATION n. the action of exhilarating.
 |  | EXTREMOPHILES | • extremophiles n. Plural of extremophile. • EXTREMOPHILE n. an organism that lives under extreme environmental conditions.
 |  | HEXOBARBITALS | • HEXOBARBITAL n. a barbiturate used as a sedative and hypnotic. |  | HYDROXYLATING | • hydroxylating v. Present participle of hydroxylate. • HYDROXYLATE v. to introduce hydroxyl into.
 |  | HYDROXYLATION | • hydroxylation n. (Organic chemistry) The introduction of a hydroxyl group into a molecule, especially by the replacement… • HYDROXYLATION n. the act of hydroxylating.
 |  | XEROPHTHALMIA | • xerophthalmia n. (Ophthalmology) A condition due to a deficiency of vitamin A where the conjunctiva and cornea become… • XEROPHTHALMIA n. extreme dryness of the conjunctive, thought to stem from a vitamin A deficiency, also XEROMA.
 |  | XEROPHTHALMIC | • xerophthalmic adj. Of or pertaining to xerophthalmia. • XEROPHTHALMIC adj. relating to xerophthalmia.
 |  | XIPHIPLASTRAL | • xiphiplastral adj. Relating to a xiphiplastron. • XIPHIPLASTRAL n. a type of chelonian.
 |  | XIPHIPLASTRON | • xiphiplastron n. The posterior, or fourth lateral plate in the plastron of a turtle. • XIPHIPLASTRON n. in chelonians, one of the plates forming the plastron, lying posterior to the hypoplastron.
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 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.
 
 See this list for:English Wiktionary: 49 wordsScrabble in French: 4 wordsScrabble in Spanish: no wordScrabble in Italian: 1 wordScrabble in German: no wordScrabble in Romanian: 14 words
 
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