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There are 19 fifteen-letter words containing H, I, O, 2P, 2R and Y

ANTIPORNOGRAPHYantipornography adj. Opposed to the distribution and consumption of pornography.
ANTIPORNOGRAPHY adj. opposed to pornography.
CRYPTOGRAPHICALcryptographical adj. Relating to cryptography; cryptographic.
CRYPTOGRAPHICAL adj. of, relating to, or using cryptography, also CRYPTOGRAPHIC.
CRYPTOGRAPHISTScryptographists n. Plural of cryptographist.
CRYPTOGRAPHIST n. one who studies cryptographs.
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.
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.
MICROSPOROPHYLLmicrosporophyll n. A leaflike organ that bears one or more microsporangia (contrast megasporophyll or macrosporophyll).
MICROSPOROPHYLL n. a specialised leaf bearing or subtending one or more microsporangia.
PEROXYSULPHURICPEROXYSULPHURIC adj. as in peroxysulphuric acid.
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.
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: 94 words
  • Scrabble in French: 28 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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