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

ASTROPHYSICALLYastrophysically adv. With regard to astrophysics.
ASTROPHYSICAL adv. relating to astrophysics.
CHEMOPSYCHIATRYCHEMOPSYCHIATRY n. treatment of mental illness by drugs.
HEMICRYPTOPHYTEhemicryptophyte n. (Botany) Any plant whose buds rest on the surface, being protected in various ways.
HEMICRYPTOPHYTE n. any perennial plant that bears its overwintering buds at soil level, where they are often partly covered by surface debris.
HYDROPATHICALLYhydropathically adv. By means of hydropathy.
HYDROPATHICAL adv. relating to hydropathy, also HYDROPATHIC.
HYDROTROPICALLYhydrotropically adv. In a hydrotropic manner.
HYDROTROPIC adv. exhibiting hydrotropism, i.e. growth in the direction of water.
HYDROXYAPATITEShydroxyapatites n. Plural of hydroxyapatite.
HYDROXYAPATITE n. a complex phosphate of calcium that occurs as a mineral and is the chief structural element of vertebrate bone.
HYDROXYLAPATITEhydroxylapatite n. Alternative spelling of hydroxyapatite.
HYDROXYLAPATITE n. a mineral of the apatite group that is rare in the ground but is the principal inorganic constituent of tooth enamel and bone.
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.
HYPOCRYSTALLINEhypocrystalline adj. (Geology, of igneous rocks) having both glass and crystalline components.
HYPOCRYSTALLINE adj. of igneous rocks, having both glass and crystalline components.
HYPOTHYROIDISMShypothyroidisms n. Plural of hypothyroidism.
HYPOTHYROIDISM n. deficient activity of the thyroid gland.
HYPSOMETRICALLYhypsometrically adv. By means of, or in terms of, hypsometry.
HYPSOMETRICAL adv. of, relating to, or indicating elevation (as on a map), also HYPSOMETRIC.
NEUROPSYCHIATRYneuropsychiatry n. (Medicine) The branch of medicine dealing with disorders that have both neurological and psychiatric features.
NEUROPSYCHIATRY n. a branch of medicine concerned with both neurology and psychiatry.
ONYCHOCRYPTOSISonychocryptosis n. (Medicine) ingrowing toenail.
ONYCHOCRYPTOSIS n. the condition of having an ingrowing toenail.
ORTHOPSYCHIATRYorthopsychiatry n. (Psychiatry) branch of psychiatry concerned with the prevention of mental illness, especially in the young.
ORTHOPSYCHIATRY n. preventive psychiatry for young people.
PSYCHOCHEMISTRYpsychochemistry n. The study of the psychological effects of chemicals on the brain.
PSYCHOCHEMISTRY n. the treatment of mental illness by drugs.
PYROTECHNICALLYpyrotechnically adv. By means of pyrotechnics.
PYROTECHNICAL adv. relating to pyrotechnics, the art of making fireworks, also PYROTECHNIC.
SAPROPHYTICALLYsaprophytically adv. In a saprophytic manner.
SAPROPHYTIC adv. relating to a saprophyte.
TYPOGRAPHICALLYtypographically adv. In a typographical manner.
TYPOGRAPHICAL adv. relating to typography, the art of printing or using type, also TYPOGRAPHIC.
XYLOTYPOGRAPHICxylotypographic adj. Of or pertaining to xylotypography.
XYLOTYPOGRAPHIC adj. relating to, or printed from, wooden type.

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: 87 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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