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There are 19 twelve-letter words containing A, C, H, 2O, S and 2T

ACOLOUTHITESACOLOUTHITE n. (obsolete) an acolyte.
ANORTHOSITICanorthositic adj. (Geology, mineralogy) Composed of anorthosite.
ANORTHOSITIC adj. of or like anorthosite.
ATHROCYTOSESATHROCYTOSIS n. of a cell, having the ability to absorb and store foreign matter.
ATHROCYTOSISathrocytosis n. The absorption of foreign material in the cytoplasm of some cells.
ATHROCYTOSIS n. of a cell, having the ability to absorb and store foreign matter.
AUTOCHTHONESautochthones n. Plural of autochthon.
AUTOCHTHON n. one sprung from the ground he inhabits, aborigine, native.
CHOCOLATIESTchocolatiest adj. Superlative form of chocolaty: most chocolaty.
chocolatiest adj. Superlative form of chocolatey: most chocolatey.
CHOCOLATY adj. of or like chocolate, also CHOCOLATEY.
COHORTATIVEScohortatives n. Plural of cohortative.
COHORTATIVE n. in Hebrew grammar, a lengthened form of the imperfect.
HOMOEOSTATIChomoeostatic adj. Alternative spelling of homeostatic.
HOMOEOSTATIC adj. relating to homoeostasis.
OCTASTICHONSOCTASTICHON n. a poem or stanza of eight lines, also OCTASTICH.
OCTASTICHOUSoctastichous adj. (Botany) Having a phyllotaxis of eight leaves in each spiral around a stem.
OCTASTICHOUS adj. in eight rows, also OCTOSTICHOUS.
OCTASTROPHICOCTASTROPHIC adj. consisting of eight strophes.
ORCHESTRATORorchestrator n. One who orchestrates.
ORCHESTRATOR n. one who orchestrates, also ORCHESTRATER.
ORTHOCLASTICorthoclastic adj. (Crystallography) Having cleavage planes at right angles, as in orthoclase.
ORTHOCLASTIC adj. chiefly of feldspar, having cleavages at right angles.
PHONOTACTICSphonotactics n. (Linguistics, phonology) A branch of phonology that deals with the restrictions a language applies to…
PHONOTACTICS n. the area of phonology concerned with the analysis and description of the permitted sound sequences of a language.
PHOTOELASTICphotoelastic adj. (Of a material) exhibiting birefringence when stressed.
photoelastic adj. Of, or relating to photoelasticity.
PHOTOELASTIC adj. relating to or exhibiting photoelastic.
TAUTOCHRONEStautochrones n. Plural of tautochrone.
TAUTOCHRONE n. a curve such that a particle travelling along it under gravity reaches a fixed point in the same time, no matter where it starts.
THORACOSTOMYthoracostomy n. Incision into the chest wall, with maintenance of the opening for drainage.
THORACOSTOMY n. the construction of an artificial opening in the chest, usually to draw off fluid or release a buildup of air.
TRACHEOSTOMYtracheostomy n. (Surgery) A surgical procedure in which an incision is made into the trachea, through the neck, and…
TRACHEOSTOMY n. a surgical incision into the windpipe, to relieve choking, also TRACHEOTOMY.
TRACHOMATOUStrachomatous adj. Relating to a trachoma.
TRACHOMATOUS adj. relating to trachoma.

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: 72 words
  • Scrabble in French: 6 words
  • Scrabble in Spanish: 9 words
  • Scrabble in Italian: 23 words
  • Scrabble in German: no word
  • Scrabble in Romanian: 2 words


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