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There are 15 thirteen-letter words containing H, 2O, R, S, 2T and Y

HETEROCYSTOUSheterocystous adj. Having heterocysts.
HETEROCYSTOUS adj. of or like a heterocyst.
HETEROSTROPHYheterostrophy n. (Biology) Twisting in a different direction.
HETEROSTROPHY n. the state of being heterostrophic, consisting of unequal strophes.
HETEROSTYLOUSheterostylous adj. Exhibiting heterostyly.
HETEROSTYLOUS adj. having styles of different length in different flowers, also HETEROSTYLED.
HETEROZYGOTESheterozygotes n. Plural of heterozygote.
HETEROZYGOTE n. a heterozygous individual.
HYPOTHECATORShypothecators n. Plural of hypothecator.
HYPOTHECATOR n. one who hypothecates.
HYSTEROTOMIEShysterotomies n. Plural of hysterotomy.
HYSTEROTOMY n. a Caesarean cut.
PHYTOESTROGENphytoestrogen n. (Biochemistry) A substance found in certain plants (such as genistein) which can produce effects like…
PHYTOESTROGEN n. a plant substance similar to a weak oestrogen.
STOECHIOMETRYstœchiometry n. Obsolete spelling of stoichiometry.
STOECHIOMETRY n. the branch of chemistry that deals with the numerical proportions in which substances react, also STOICHIOMETRY.
STOICHIOMETRYstoichiometry n. (Uncountable, chemistry) The study and calculation of quantitative (measurable) relationships of the…
stoichiometry n. (Countable, chemistry) The quantitative relationship between the reactants and products of a specific…
STOICHIOMETRY n. the branch of chemistry that deals with the numerical proportions in which substances react, also STOECHIOMETRY.
THORACOPLASTYthoracoplasty n. (Surgery) Surgery of the chest, usually involving removal of ribs.
THORACOPLASTY n. surgery to collapse a diseased lung by removing selected portions of the ribs.
THROMBOLYTICSthrombolytics n. Plural of thrombolytic.
THROMBOLYTIC n. a thrombolytic drug.
THYROTROPHINSthyrotrophins n. Plural of thyrotrophin.
THYROTROPHIN n. a hormone, produced in the anterior lobe of the pituitary gland, which stimulates the thyroid, also THYROTROPIN.
TOPOCHEMISTRYtopochemistry n. (Chemistry) The chemistry of reactions that are dependent on, or change, the topology of the reactants.
TOPOCHEMISTRY n. the study of reactions that only occur at specific regions in a system.
TRICHOPHYTONStrichophytons n. Plural of trichophyton.
TRICHOPHYTON n. any fungus of the genus Trichophyton, causing ringworm.
YELLOWTHROATSyellowthroats n. Plural of yellowthroat.
YELLOWTHROAT n. any of several largely olive American warblers.

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: 58 words
  • Scrabble in French: 6 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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