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There are 19 fifteen-letter words containing H, M, 2O, R, S, T and Y

ARCHEOASTRONOMYarcheoastronomy n. Alternative spelling of archaeastronomy.
ARCHEOASTRONOMY n. the scientific study of the beliefs and practices concerning astronomy that existed in ancient and prehistoric civilizations.
BIOGEOCHEMISTRYbiogeochemistry n. (Biology, geology, chemistry, ecology) The scientific study of biological, geological and chemical processes…
BIOGEOCHEMISTRY n. the science of plants and animals in relation to chemicals in the soil.
DEMYTHOLOGISERSDEMYTHOLOGISER n. one who demythologises, also DEMYTHOLOGIZER.
DEMYTHOLOGIZERSdemythologizers n. Plural of demythologizer.
DEMYTHOLOGIZER n. one who demythologizes, also DEMYTHOLOGISER.
DERMATOPHYTOSESdermatophytoses n. Plural of dermatophytosis.
DERMATOPHYTOSIS n. a fungal infection of the skin, esp. the feet.
DERMATOPHYTOSISdermatophytosis n. (Medicine) A fungal infection of the skin caused by a dermatophyte, ringworm.
DERMATOPHYTOSIS n. a fungal infection of the skin, esp. the feet.
ECTOMYCORRHIZASectomycorrhizas n. Plural of ectomycorrhiza.
ECTOMYCORRHIZA n. a type of mycorrhiza in which the fungus forms a layer on the outside of the roots of the plant.
HAEMOCYTOMETERShaemocytometers n. Plural of haemocytometer.
HAEMOCYTOMETER n. an apparatus for counting the number of cells in a quantity of blood, typically consisting of a graduated pipette for drawing and diluting, also HEMOCYTOMETER.
HYPOTHYROIDISMShypothyroidisms n. Plural of hypothyroidism.
HYPOTHYROIDISM n. deficient activity of the thyroid gland.
HYSTRICOMORPHICHYSTRICOMORPHIC adj. belonging to the rodent suborder Hystricomorpha, which includes porcupines, cavies, agoutis, and chinchillas.
LYMPHOSARCOMATAlymphosarcomata n. Plural of lymphosarcoma.
LYMPHOSARCOMA n. a tumour of the lymph glands.
POLYCHROMATISMSPOLYCHROMATISM n. being multicoloured.
PROSENCHYMATOUSprosenchymatous adj. Relating to the prosenchyma.
PROSENCHYMATOUS adj. relating to prosenchyma, supporting plant tissue containing little protoplasm.
PYROPHOTOMETERSPYROPHOTOMETER n. a type of pyrometer in which the temperature of an incandescent body is determined by photometric measurement of the light it emits.
REMYTHOLOGISINGREMYTHOLOGISE v. to mythologise again, also REMYTHOLOGIZE.
SCHOOLMISTRESSYschoolmistressy adj. Resembling or characteristic of a schoolmistress.
SCHOOLMISTRESSY adj. like a schoolmistress, prim.
STREPHOSYMBOLIAstrephosymbolia n. A tendency, associated with word blindness, to twist or invert certain similar letters (such as b and d) when reading.
STREPHOSYMBOLIA n. a visual disorder where letters are seen mirror imaged.
SYMMETROPHOBIASSYMMETROPHOBIA n. fear of symmetry.
THYROIDECTOMIESthyroidectomies n. Plural of thyroidectomy.
THYROIDECTOMY n. the surgical removal of the thyroid gland.

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: 161 words
  • Scrabble in French: 7 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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