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There are 15 twelve-letter words containing A, D, H, I, M, O, R and T

ACHROMATISEDachromatised v. Simple past tense and past participle of achromatise.
ACHROMATISE v. to make achromatic, also ACHROMATIZE.
ACHROMATIZEDachromatized v. Simple past tense and past participle of achromatize.
ACHROMATIZE v. to make achromatic, also ACHROMATISE.
CATHIODERMIECATHIODERMIE n. a beauty treatment for the skin, which involves using electrotherapy.
DEMOGRAPHISTDEMOGRAPHIST n. a demographer.
DIASTROPHISMdiastrophism n. (Geology) The deformation of the Earth’s crust to form the continents, mountains and other large features.
DIASTROPHISM n. the process by which continents, mountains, ocean beds, folds and faults are formed.
DICHROMATICSDICHROMATIC n. a person with dichromatic vision.
DICHROMATISMdichromatism n. The condition of being dichromatic.
dichromatism n. (Pathology) A form of colourblindness in which only two of the three primary colours can be distinguished.
dichromatism n. (Biology) The condition when male and female birds have different plumage colors.
HEMICHORDATEhemichordate n. (Biology) Any of many marine worms, of the phylum Hemichordata, that have a primitive notochord.
hemichordate adj. Of, pertaining to, or characteristic of these animals.
HEMICHORDATE n. a kind of marine worm.
HYDATIDIFORMhydatidiform adj. Resembling a hydatid.
HYDATIDIFORM adj. having the shape of a hydatid, a fluid-filled cyst, esp. one containing tapeworm larva.
MACHAIRODONTmachairodont n. Any sabre-toothed animal of the subfamily Machairodontinae.
MACHAIRODONT n. a sabre-toothed animal.
MEDIATORSHIPmediatorship n. The office or character of a mediator.
MEDIATORSHIP n. the office of mediator.
MITOCHONDRIAmitochondria n. Plural of mitochondrion.
mitochondria n. (Sometimes proscribed) mitochondrion.
MITOCHONDRION n. a cell structure containing enzymes that provide the cell with energy.
RADIOCHEMISTradiochemist n. A chemist who specializes in radiochemistry.
RADIOCHEMIST n. one who practises radiochemistry.
RADIOTHORIUMradiothorium n. (Physics) The radioactive isotope thorium-228.
RADIOTHORIUM n. a radioactive isotope of thorium with the mass number 228.
TRICHOMONADStrichomonads n. Plural of trichomonad.
TRICHOMONAD n. any of various flagellate protozoans occurring in the digestive and urogenital tracts of vertebrates.

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: 80 words
  • Scrabble in French: 3 words
  • Scrabble in Spanish: 14 words
  • Scrabble in Italian: 13 words
  • Scrabble in German: no word
  • Scrabble in Romanian: 21 words


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