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There are 14 twelve-letter words containing H, O, R, U and X

AUXOTROPHIESauxotrophies n. Plural of auxotrophy.
AUXOTROPHY n. the state of being auxotrophic, requiring a specific growth substance beyond the minimum required for normal metabolism.
EXECUTORSHIPexecutorship n. The office or position of an executor.
EXECUTORSHIP n. the office of executor.
HETEROAUXINSheteroauxins n. Plural of heteroauxin.
HETEROAUXIN n. a natural plant hormone, used esp. for stimulating growth and root formation in plant cutting.
HETERODUPLEXheteroduplex n. (Biochemistry) A nucleic acid composed of two chains with each derived from a different parent molecule.
heteroduplex v. To form such a compound by genetic recombination.
HETERODUPLEX n. a nucleic-acid molecule, such as DNA, composed of two chains with each derived from a different parent molecule.
HETEROSEXUALheterosexual adj. Sexually attracted to members of the opposite sex.
heterosexual n. A heterosexual person, or other heterosexual organism.
HETEROSEXUAL adj. attracted to the opposite sex.
HEXAFLUORIDEhexafluoride n. (Chemistry) any fluoride containing six fluorine atoms in each molecule.
HEXAFLUORIDE n. a chemical compound with the general formula XF6.
HYDROXONIUMShydroxoniums n. Plural of hydroxonium.
HYDROXONIUM n. the obsolete name for the cation H3O+ derived from protonation of water.
HYDROXYUREAShydroxyureas n. Plural of hydroxyurea.
HYDROXYUREA n. a drug used to treat some forms of leukemia, melanoma, and malignant tumors.
PNEUMOTHORAXpneumothorax n. (Medicine) Presence of air inside the pleural cavity, usually caused by injury either to the lung or the chest wall.
PNEUMOTHORAX n. accumulation of air or gas in the pleural cavity.
PYRRHULOXIASpyrrhuloxias n. Plural of pyrrhuloxia.
PYRRHULOXIA n. a grey-and-pink crested bunting of Central and SW North America, with a short parrot-like bill.
THUNDERBOXESthunderboxes n. Plural of thunderbox.
thunder-boxes n. Plural of thunder-box (alternative form of thunderboxes).
thunder␣boxes n. Plural of thunder box (alternative form of thunderboxes).
UNORTHODOXESSorry, definition not available.
UNORTHODOXLYunorthodoxly adv. In an unorthodox manner, unconventionally.
UNORTHODOX adv. not orthodox.
XEROMORPHOUSxeromorphous adj. Xeromorphic.
XEROMORPHOUS adj. of parts of a plant, protected against excessive loss of water by thick cuticles, coatings of hairs and similar structural features, also XEROMORPHIC.

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: 53 words
  • Scrabble in French: 18 words
  • Scrabble in Spanish: 2 words
  • Scrabble in Italian: no word
  • Scrabble in German: no word
  • Scrabble in Romanian: 10 words


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