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There are 11 fifteen-letter words containing A, C, D, E, N, 2O and Y

CHLAMYDOMONADESCHLAMYDOMONAS n. a member of the genus Chlamydomonas of (mainly freshwater) green algae.
COEDUCATIONALLYcoeducationally adv. In a coeducational manner.
COEDUCATIONAL adv. relating to coeducation.
CROTONALDEHYDEScrotonaldehydes n. Plural of crotonaldehyde.
CROTONALDEHYDE n. a pungent liquid aldehyde obtained by dehydration of aldol.
DECARBOXYLATIONdecarboxylation n. (Organic chemistry) The removal of one or more carboxyl groups from a molecule.
DECARBOXYLATION n. the removal or elimination of carboxyl from a molecule.
HYDROCORALLINESHYDROCORALLINE n. a member the Hydrozoa, which includes millepores etc.
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.
PERIODONTICALLYPERIODONTIC adv. relating to periodontia, the branch of dentistry concerned with periodontal diseases.
POLYCHLORINATEDpolychlorinated adj. (Chemistry) Having many hydrogen atoms replaced by chlorine.
POLYCHLORINATED adj. as in polychlorinated biphenyl.
UNIDEOLOGICALLYunideologically adv. Without regard to ideology.

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: 185 words
  • Scrabble in French: 7 words
  • Scrabble in Spanish: 4 words
  • Scrabble in Italian: no word
  • Scrabble in German: no word
  • Scrabble in Romanian: no word


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