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There are 12 twelve-letter words containing A, C, D, H, I, L, N and O

CHALCEDONIESchalcedonies n. Plural of chalcedony.
CHALCEDONY n. a crystalline form of quartz, microscopically fibrous with waxy luster, also CALCEDONY.
CHALCOGENIDEchalcogenide n. (Inorganic chemistry) Any binary compound of a chalcogen with a more electropositive element.
CHALCOGENIDE n. a binary compound of a chalcogen with a more electropositive element or radical.
CHILIAHEDRONchiliahedron n. (Geometry) A polyhedron bounded by one thousand plane surfaces.
CHILIAHEDRON n. (Greek) a one-thousand sided solid figure.
CHLORIDATINGchloridating v. Present participle of chloridate.
CHLORIDATE v. to treat or prepare with a chloride, as a plate with chloride of silver, for the purposes of photography.
CONCHOIDALLYconchoidally adv. In a conchoidal manner.
CONCHOIDAL adv. shell-like, as applied to fractures in glass and quartz.
DECHLORINATEdechlorinate v. To remove chlorine from something.
DECHLORINATE v. to remove chlorine from.
DIENCEPHALONdiencephalon n. (Neuroanatomy, anatomy) The region of the human brain, specifically the human forebrain, that includes…
DIENCEPHALON n. the back of the forebrain, connecting the midbrain with the cerebral hemispheres.
ECHINODERMALechinodermal adj. (Zoology) Relating or belonging to the echinoderms.
ECHINODERMAL adj. of or like an echinoderm.
ETHNOMEDICALethnomedical adj. Relating to ethnomedicine.
HYDRONICALLYhydronically adv. In terms of, or by means of, hydronics.
HYDRONIC adv. pertaining to heating and cooling by water.
PERICHONDRALperichondral adj. Surrounding cartilage.
PERICHONDRAL adj. of or like a perichondrium.
UNMETHODICALunmethodical adj. Not methodical.
UNMETHODICAL adj. not methodical.

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: 103 words
  • Scrabble in French: 7 words
  • Scrabble in Spanish: 14 words
  • Scrabble in Italian: 17 words
  • Scrabble in German: no word
  • Scrabble in Romanian: 6 words


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