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There are 18 thirteen-letter words containing E, H, M, 2O, R, S and Y

CHLAMYDOSPOREchlamydospore n. A thick-walled spore that is the resting stage of some bacteria.
CHLAMYDOSPORE n. a thick-walled usually resting fungal spore.
CHROMATOLYSESchromatolyses n. Plural of chromatolysis.
CHROMATOLYSIS n. the dissolution and breaking up of chromophil material (as chromatin) of a cell and esp. a nerve cell.
DYSMENORRHOEAdysmenorrhoea n. Alternative spelling of dysmenorrhea.
dysmenorrhœa n. Obsolete form of dysmenorrhea.
DYSMENORRHOEA n. painful menstruation, also DYSMENORRHEA.
HYDROMEDUSOIDHYDROMEDUSOID n. a hydromedusa, also HYDROMEDUSA, HYDROMEDUSAN.
HYMENOPTERONShymenopterons n. Plural of hymenopteron.
HYMENOPTERON n. an order of insect having four membranous wings, e.g. ants, bees, wasps, also HYMENOPTERAN.
HYMENOPTEROUShymenopterous adj. (Entomology) Of the order Hymenoptera; hymenopteran.
HYMENOPTEROUS adj. having four membranous wings, as do ants, bees and wasps.
HYSTEROTOMIEShysterotomies n. Plural of hysterotomy.
HYSTEROTOMY n. a Caesarean cut.
METHOXYCHLORSMETHOXYCHLOR n. a relatively nontoxic organochlorine insecticide.
MYTHOLOGISERSmythologisers n. Plural of mythologiser.
MYTHOLOGISER n. one who mythologises, also MYTHOLOGIZER.
MYTHOLOGIZERSmythologizers n. Plural of mythologizer.
MYTHOLOGIZER n. one who mythologizes, also MYTHOLOGISER.
PHOTOPOLYMERSphotopolymers n. Plural of photopolymer.
PHOTOPOLYMER n. a photosensitive plastic used esp. in the manufacture of printing plates.
PHYTOHORMONESphytohormones n. Plural of phytohormone.
PHYTOHORMONE n. a plant hormone, regulating growth.
PYROMORPHITESpyromorphites n. Plural of pyromorphite.
PYROMORPHITE n. a green, brown, or yellow lead ore.
REMYTHOLOGISEREMYTHOLOGISE v. to mythologise again, also REMYTHOLOGIZE.
RHYTHMOPOEIASRHYTHMOPOEIA n. the art of composing rhythmically.
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.
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.

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: 79 words
  • Scrabble in French: 15 words
  • Scrabble in Spanish: 1 word
  • Scrabble in Italian: no word
  • Scrabble in German: no word
  • Scrabble in Romanian: no word


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