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There are 15 fifteen-letter words containing E, H, I, 2P, 2R and Y

HEMATOPORPHYRINhematoporphyrin n. (Biochemistry) The porphyrin portion of heme (minus the iron atom).
HEMATOPORPHYRIN n. any of several porphyrins that are hydrated derivatives of protoporphyrins.
HYPERMETROPICALhypermetropical adj. Synonym of hypermetropic.
HYPERMETROPICAL adj. longsighted, also HYPERMETROPIC.
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.
HYPERPOLARISINGhyperpolarising v. Present participle of hyperpolarise.
HYPERPOLARISE v. to increase the difference in electric potential across a cell membrane, also HYPERPOLARIZE.
HYPERPOLARIZINGhyperpolarizing v. Present participle of hyperpolarize.
HYPERPOLARIZE v. to produce an increase in potential difference across a biological membrane, also HYPERPOLARISE.
HYPERPRODUCTIONhyperproduction n. Excessive production.
HYPERPRODUCTION n. excessive production.
HYPERPRODUCTIVEhyperproductive adj. Exceptionally productive.
HYPERRESPONSIVEhyperresponsive adj. Involving an abnormally high degree of responsiveness.
HYPERRESPONSIVE adj. excessively responsive.
PEROXYSULPHURICPEROXYSULPHURIC adj. as in peroxysulphuric acid.
PORPHYROGENITESporphyrogenites n. Plural of porphyrogenite.
PORPHYROGENITE n. a Byzantine emperor's son, born in the purple.
PTERYLOGRAPHIESpterylographies n. Plural of pterylography.
PTERYLOGRAPHY n. a description of pterylae.
PYRETOTHERAPIESPYRETOTHERAPY n. medical treatment by causing fever.
RHOMBPORPHYRIESRHOMBPORPHYRY n. an intermediate, moderately fine-grained igneous rock with feldspar inclusions, also RHOMBENPORPHYR, RHOMBENPORPHYRY.
RHYPAROGRAPHIESRHYPAROGRAPHY n. genre or still-life pictures of sordid subjects.
SEMIPORNOGRAPHYsemipornography n. Material that is partly or somewhat pornographic.
SEMIPORNOGRAPHY n. material approaching the pornographic.

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: 88 words
  • Scrabble in French: 27 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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