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There are 20 fifteen-letter words containing H, N, 2O, P, 2R and Y

AEROHYDROPLANESAEROHYDROPLANE n. a winged hydroplane or flying-boat.
ANDROGYNOPHORESandrogynophores n. Plural of androgynophore.
ANDROGYNOPHORE n. another name for the androphore, a support or column on which stamens are raised.
ANTIPORNOGRAPHYantipornography adj. Opposed to the distribution and consumption of pornography.
ANTIPORNOGRAPHY adj. opposed to pornography.
EPICHLOROHYDRINepichlorohydrin n. (Chemistry) Any epihalohydrin in which the halogen is chlorine.
EPICHLOROHYDRIN n. a volatile liquid toxic epoxide used esp. in making epoxy resins and rubbers.
ERYTHROPOIETINSerythropoietins n. Plural of erythropoietin.
ERYTHROPOIETIN n. a glycoprotein hormone that stimulates the production of red blood cells by stem cells in bone marrow.
GYNANDROMORPHICgynandromorphic adj. (Of an organism) Having male and female characteristics.
GYNANDROMORPHIC adj. of or like a gynandromorph, an animal having both male and female characteristics.
HEMATOPORPHYRINhematoporphyrin n. (Biochemistry) The porphyrin portion of heme (minus the iron atom).
HEMATOPORPHYRIN n. any of several porphyrins that are hydrated derivatives of protoporphyrins.
HYDROXYPROLINEShydroxyprolines n. Plural of hydroxyproline.
HYDROXYPROLINE n. an amino acid.
HYPERCORRECTIONhypercorrection n. (Linguistics) Nonstandard language use that results from the over-application of a perceived prescriptive rule.
hypercorrection n. (Linguistics) A nonstandard form so used.
HYPERCORRECTION n. a grammatical, usage or pronunciation mistake made by 'correcting' something that's right to begin with.
HYPERPRODUCTIONhyperproduction n. Excessive production.
HYPERPRODUCTION n. excessive production.
HYPOMENORRHOEAShypomenorrhoeas n. Plural of hypomenorrhoea.
HYPOMENORRHOEA n. the condition in which the interval between two menstrual periods is increased to between 35 and 42 days, also HYPOMENORRHEA.
POLYCHLOROPRENEpolychloroprene n. (Organic chemistry) A polymer of chloroprene.
POLYCHLOROPRENE n. neoprene.
PORPHYROGENITESporphyrogenites n. Plural of porphyrogenite.
PORPHYROGENITE n. a Byzantine emperor's son, born in the purple.
PROTOPORPHYRINSprotoporphyrins n. Plural of protoporphyrin.
PROTOPORPHYRIN n. metal-free porphyrin derived from blood hemin.
RHOMBENPORPHYRSRHOMBENPORPHYR n. an intermediate, moderately fine-grained igneous rock with feldspar phenocrysts rhombic in section, also RHOMBENPORPHYRY, RHOMBPORPHYRY.
RHOMBENPORPHYRYRHOMBENPORPHYRY n. an intermediate, moderately fine-grained igneous rock with feldspar inclusions, also RHOMBENPORPHYR, RHOMBPORPHYRY.
ROENTGENOGRAPHYroentgenography n. Radiography; The production of roentgenograms.
ROENTGENOGRAPHY n. radiography.
RONTGENOTHERAPYRONTGENOTHERAPY n. treatment by X-rays.
SEMIPORNOGRAPHYsemipornography n. Material that is partly or somewhat pornographic.
SEMIPORNOGRAPHY n. material approaching the pornographic.
ULTRASONOGRAPHYultrasonography n. (Medicine) The use of ultrasound to produce diagnostic images of the internal organs of the body, or of a foetus.
ultrasonography n. The use of ultrasound to form images of underwater structures.
ULTRASONOGRAPHY n. the use of ultrasound.

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: 100 words
  • Scrabble in French: 12 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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