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There are 15 twelve-letter words containing D, E, H, O, 2R, S and Y

BOROHYDRIDESborohydrides n. Plural of borohydride.
BOROHYDRIDE n. a compound of boron and hydrogen, used as a reducing agent.
CARBOHYDRASEcarbohydrase n. (Biochemistry) Any enzyme that catalyses the hydrolysis of polysaccharides into simple sugars.
CARBOHYDRASE n. any of a group of enzymes (as amylase) that promote hydrolysis or synthesis of a carbohydrate (as a disaccharide).
CRYOHYDRATEScryohydrates n. Plural of cryohydrate.
CRYOHYDRATE n. a crystalline substance containing water and a salt in definite proportions, a eutectic crystallizing below the freezing point of water.
DYSMENORRHEAdysmenorrhea n. (Medicine) Painful menstruation (menstrual#Adjective pain), viewed as a symptom#Noun in any of various disorders.
dysmenorrhea n. (Medicine) Painful menstruation (menstrual#Adjective pain), viewed as a disorder#Noun in its own right…
DYSMENORRHEA n. painful menstruation, also DYSMENORRHOEA.
HORRENDOUSLYhorrendously adv. In a horrendous manner.
HORRENDOUS adv. fearful; frightful.
HYDROMANCERShydromancers n. Plural of hydromancer.
HYDROMANCER n. one who practises hydromancy.
HYDROMETEORShydrometeors n. Plural of hydrometeor.
HYDROMETEOR n. a general term for the aqueous phenomena of the atmosphere, as rain, snow, sleet, hail.
HYDROMETRIESHYDROMETRY n. the art of determining the specific gravity of liquids, and thence the strength of spirituous liquors, saline solutions, etc.
HYDROSPHEREShydrospheres n. Plural of hydrosphere.
HYDROSPHERE n. the water of the earth.
HYDROSPHERIChydrospheric adj. Relating to the hydrosphere.
HYDROSPHERIC adj. relating to the hydrosphere.
HYDROXYUREAShydroxyureas n. Plural of hydroxyurea.
HYDROXYUREA n. a drug used to treat some forms of leukemia, melanoma, and malignant tumors.
HYPERIDROSESHYPERIDROSIS n. excessive sweating, also HYPERHIDROSIS.
HYPERIDROSISHYPERIDROSIS n. excessive sweating, also HYPERHIDROSIS.
REHYDRATIONSrehydrations n. Plural of rehydration.
REHYDRATION n. the act of rehydrating.
WORDSMITHERYwordsmithery n. The work of a wordsmith; skilful use of words.
WORDSMITHERY n. the craft of the wordsmith.

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.

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See this list for:

  • English Wiktionary: 52 words
  • Scrabble in French: 18 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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