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There are 15 fifteen-letter words containing H, M, 2R, S, T and Y

ANTIARRHYTHMICSantiarrhythmics n. Plural of antiarrhythmic.
ANTIARRHYTHMIC n. a drug to prevent cardiac arrhythmia.
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.
CRYPTORCHIDISMScryptorchidisms n. Plural of cryptorchidism.
CRYPTORCHIDISM n. the condition in which one or both testes do not descend normally, also CRYPTORCHISM.
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.
HYPERCRITICISMShypercriticisms n. Plural of hypercriticism.
HYPERCRITICISM n. an instance of being hypercritical.
HYPERMODERNISTShypermodernists n. Plural of hypermodernist.
HYPERMODERNIST n. a practitioner of a hypermodernist style in art.
HYPERNATRAEMIAShypernatraemias n. Plural of hypernatraemia.
HYPERNATRAEMIA n. an abnormally high concentration of sodium chloride (salt) in the blood, esp. in infants.
HYPERPARASITISMhyperparasitism n. (Biology) parasitism by one parasite upon another.
HYPERPARASITISM n. the state of being a hyperparasite, a parasite that is parasitic upon another parasite.
HYPERTHYROIDISMhyperthyroidism n. (Medicine) The excessive production of hormones by the thyroid.
hyperthyroidism n. (Pathology) The pathological condition resulting from these excess hormones.
HYPERTHYROIDISM n. excessive functional activity of the thyroid gland.
HYSTRICOMORPHICHYSTRICOMORPHIC adj. belonging to the rodent suborder Hystricomorpha, which includes porcupines, cavies, agoutis, and chinchillas.
METHYLMERCURIESmethylmercuries n. Plural of methylmercury.
methyl␣mercuries n. Plural of methyl mercury.
METHYLMERCURY n. any of several extremely toxic organometallic compounds formed from metallic mercury by the action of microorganisms.
PSYCHROMETRICALpsychrometrical adj. Psychrometric.
PSYCHROMETRICAL adj. relating to measurement by psychrometer, also PSYCHOMETRIC, PSYCHOMETRICAL, PSYCHROMETRIC.
PYROPHOTOMETERSPYROPHOTOMETER n. a type of pyrometer in which the temperature of an incandescent body is determined by photometric measurement of the light it emits.
STEREOCHEMISTRYstereochemistry n. (Chemistry, uncountable) the branch of chemistry that involves the spatial arrangement of the atoms…
stereochemistry n. (Chemistry, countable) the effect of such spatial arrangement on the chemistry of a particular compound.
STEREOCHEMISTRY n. chemical study of arrangement of molecules and atoms.
THERMOCHEMISTRYthermochemistry n. (Chemistry, physics) The study of the thermodynamics of chemical reactions.
THERMOCHEMISTRY n. a branch of chemistry that deals with the interrelation of heat with chemical reaction or physical change of state.

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: 99 words
  • Scrabble in French: 3 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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