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There are 18 ten-letter words containing H, O, 2R, S and Y

CRYOPHORUScryophorus n. (Chemistry) An instrument used to illustrate the freezing of water by its own evaporation. The ordinary…
CRYOPHORUS n. an instrument for showing the decrease in the temperature of water by its evaporation.
DRAYHORSESDRAYHORSE n. a horse used to pull a dray.
ERYTHROSINerythrosin n. (Chemistry) A red substance formed by the oxidation of tyrosin.
erythrosin n. (Chemistry) A red dyestuff obtained from fluorescein by the action of iodine.
ERYTHROSIN n. a red substance formed by the oxidation of tyrosine, also ERYTHROSINE.
HYDROLYSERhydrolyser n. That which hydrolyses.
HYDROLYSER n. an agent that hydrolyses, also HYDROLYZER.
HYDROSEREShydroseres n. Plural of hydrosere.
HYDROSERE n. an ecological sere originating in an aquatic habitat.
HYGRISTORShygristors n. Plural of hygristor.
HYGRISTOR n. an electronic component whose resistance varies with humidity.
OVERRASHLYoverrashly adv. With excessive rashness.
OVERRASH adv. excessively rash.
PORPHYRIASporphyrias n. Plural of porphyria.
PORPHYRIA n. any of various disorders of metabolism resulting in the excretion of an excessive quantity of porphyrins in the urine.
PORPHYRIESporphyries n. Plural of porphyry.
PORPHYRY n. (Greek) a very hard, variegated rock of a purple and white colour, used in sculpture.
PORPHYRINSporphyrins n. Plural of porphyrin.
PORPHYRIN n. any of a large group of red or purple crystalline pigments present in plant and animal tissues.
PORPHYRIOSporphyrios n. Plural of porphyrio.
PORPHYRIO n. any bird of the purple-coot genus Porphyrio.
PORPHYROUSporphyrous adj. Of or crafted from porphyry.
porphyrous adj. Of purple hue, like that of porphyry.
PORPHYROUS adj. purple.
PREHENSORYprehensory adj. Adapted to seize or grasp; prehensile.
PREHENSORY adj. adapted to seize or grasp; prehensile, also PREHENSILE, PREHENSIVE, PREHENSORIAL.
PREHISTORYprehistory n. The time before written records in any area of the world; the events and conditions of those times.
prehistory n. The study of those times.
prehistory n. (Humorous, hyperbolic) Any past time (even recent) treated as such a distant, unknowable era.
PYORRHOEASpyorrhoeas n. Plural of pyorrhoea.
PYORRHOEA n. suppuration in the sockets of the teeth, also PYORRHEA.
PYROPHORUSpyrophorus n. A substance capable of taking fire spontaneously on exposure to the air, especially in a finely divided state.
Pyrophorus prop.n. A taxonomic genus within the family Elateridae – fire beetles, bioluminescent click beetles.
PYROPHORUS n. any substance capable of igniting spontaneously on exposure to air.
THYRATRONSthyratrons n. Plural of thyratron.
THYRATRON n. a gas-filled valve with a heated cathode, able to carry very high currents.
THYRISTORSthyristors n. Plural of thyristor.
THYRISTOR n. a thyratron-like solid-state semiconductor device.

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: 89 words
  • Scrabble in French: 16 words
  • Scrabble in Spanish: 3 words
  • Scrabble in Italian: no word
  • Scrabble in German: no word
  • Scrabble in Romanian: no word


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