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There are 15 twelve-letter words containing D, H, X and Y

HEXADACTYLIChexadactylic adj. Hexadactylous.
HEXADACTYLIC adj. having six fingers, also HEXADACTYLOUS.
HEXAHYDRATEDhexahydrated adj. Converted to a hexahydrate.
HEXAHYDRATED adj. like a hexahydrate, a chemical compound with six molecules of water.
HEXAHYDRATEShexahydrates n. Plural of hexahydrate.
HEXAHYDRATE n. a chemical compound with six molecules of water.
HYDROXONIUMShydroxoniums n. Plural of hydroxonium.
HYDROXONIUM n. the obsolete name for the cation H3O+ derived from protonation of water.
HYDROXYLASEShydroxylases n. Plural of hydroxylase.
HYDROXYLASE n. any of a group of enzymes that catalyze oxidation reactions.
HYDROXYLATEDhydroxylated v. Simple past tense and past participle of hydroxylate.
hydroxylated adj. (Organic chemistry) That has been modified by hydroxylation.
HYDROXYLATE v. to introduce hydroxyl into.
HYDROXYLATEShydroxylates v. Third-person singular simple present indicative form of hydroxylate.
HYDROXYLATE v. to introduce hydroxyl into.
HYDROXYUREAShydroxyureas n. Plural of hydroxyurea.
HYDROXYUREA n. a drug used to treat some forms of leukemia, melanoma, and malignant tumors.
HYDROXYZINEShydroxyzines n. Plural of hydroxyzine.
HYDROXYZINE n. a compound used as an antihistamine and tranquilizer.
HYPEREXCITEDhyperexcited adj. Very highly excited.
HYPEREXCITED adj. excessively excited.
HYPEREXTENDShyperextends v. Third-person singular simple present indicative form of hyperextend.
HYPEREXTEND v. to extend so that the angle between bones of a joint is greater than normal.
NEOORTHODOXYNeoorthodoxy n. Alternative form of Neo-orthodoxy.
neo-orthodoxy n. (Christianity, theology) A theological movement developed in the aftermath of World War I, largely a…
Neo-orthodoxy n. Alternative letter-case form of neo-orthodoxy.
OXYHYDROGENSOXYHYDROGEN n. a mixture of hydrogen and oxygen used to provide an intense flame for welding.
OXYSULPHIDESoxysulphides n. Plural of oxysulphide.
OXYSULPHIDE n. a compound containing an element combined with oxygen and sulphur.
UNORTHODOXLYunorthodoxly adv. In an unorthodox manner, unconventionally.
UNORTHODOX adv. not orthodox.

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


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