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There are 12 fifteen-letter words containing A, C, D, E, H, 2O and Y

CHLAMYDOMONADESCHLAMYDOMONAS n. a member of the genus Chlamydomonas of (mainly freshwater) green algae.
CROTONALDEHYDEScrotonaldehydes n. Plural of crotonaldehyde.
CROTONALDEHYDE n. a pungent liquid aldehyde obtained by dehydration of aldol.
HETERODACTYLOUSheterodactylous adj. (Zoology) Having the first and second toes turned backward, as in the trogons.
HETERODACTYLOUS adj. having the first and second toes turned backwards, as in trogons, and not the first and fourth as in parrots.
HOMOCHLAMYDEOUShomochlamydeous adj. (Botany) Having the perianth not divided into calyx and corolla.
HOMOCHLAMYDEOUS adj. with calyx and corolla similar.
HYDROCORALLINESHYDROCORALLINE n. a member the Hydrozoa, which includes millepores etc.
HYDROEXTRACTORShydroextractors n. Plural of hydroextractor.
HYDROEXTRACTOR n. a drying machine that works centrifugally.
HYDROGEOLOGICALhydrogeological adj. Of or pertaining to hydrogeology.
HYDROGEOLOGICAL adj. related to hydrogeology.
HYPOCHONDRIASEShypochondriases n. Plural of hypochondriasis.
HYPOCHONDRIASIS n. morbid concern about one's health esp. when accompanied by delusions of physical disease.
MONOCHLAMYDEOUSmonochlamydeous adj. (Botany) Having a single floral envelope, that is, a calyx without a corolla, or, possibly, in rare…
MONOCHLAMYDEOUS adj. having a one-whorled perianth.
NONCARBOHYDRATEnoncarbohydrate n. (Often attributive) Any material that is not a carbohydrate.
NONCARBOHYDRATE adj. relating to something that is not a carbohydrate.
ORTHOPAEDICALLYorthopaedically adv. Alternative form of orthopedically.
orthopædically adv. Obsolete typography of orthopaedically.
ORTHOPAEDIC adv. relating to orthopaedics, also ORTHOPAEDICAL, ORTHOPEDIC.
POLYCHLORINATEDpolychlorinated adj. (Chemistry) Having many hydrogen atoms replaced by chlorine.
POLYCHLORINATED adj. as in polychlorinated biphenyl.

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: 110 words
  • Scrabble in French: 13 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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