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 There are 9 fifteen-letter words containing H, I, N, 2P, 2R and Y| ANTIPORNOGRAPHY | • antipornography adj. Opposed to the distribution and consumption of pornography. • ANTIPORNOGRAPHY adj. opposed to pornography.
 |  | HEMATOPORPHYRIN | • hematoporphyrin n. (Biochemistry) The porphyrin portion of heme (minus the iron atom). • HEMATOPORPHYRIN n. any of several porphyrins that are hydrated derivatives of protoporphyrins.
 |  | HYPERPOLARISING | • hyperpolarising v. Present participle of hyperpolarise. • HYPERPOLARISE v. to increase the difference in electric potential across a cell membrane, also HYPERPOLARIZE.
 |  | HYPERPOLARIZING | • hyperpolarizing v. Present participle of hyperpolarize. • HYPERPOLARIZE v. to produce an increase in potential difference across a biological membrane, also HYPERPOLARISE.
 |  | HYPERPRODUCTION | • hyperproduction n. Excessive production. • HYPERPRODUCTION n. excessive production.
 |  | HYPERRESPONSIVE | • hyperresponsive adj. Involving an abnormally high degree of responsiveness. • HYPERRESPONSIVE adj. excessively responsive.
 |  | PORPHYROGENITES | • porphyrogenites n. Plural of porphyrogenite. • PORPHYROGENITE n. a Byzantine emperor's son, born in the purple.
 |  | PROTOPORPHYRINS | • protoporphyrins n. Plural of protoporphyrin. • PROTOPORPHYRIN n. metal-free porphyrin derived from blood hemin.
 |  | SEMIPORNOGRAPHY | • semipornography n. Material that is partly or somewhat pornographic. • SEMIPORNOGRAPHY n. material approaching the pornographic.
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 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.
 
 See this list for:English Wiktionary: 54 wordsScrabble in French: 11 wordsScrabble in Spanish: no wordScrabble in Italian: no wordScrabble in German: no wordScrabble in Romanian: no word
 
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