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 There are 12 twelve-letter words containing H, L, P, S, X and Y| ANAPHYLAXIES | • ANAPHYLAXY n. an increased susceptibility to injected foreign material, also ANAPHYLAXIS. |  | OXYCEPHALIES | • oxycephalies n. Plural of oxycephaly. • OXYCEPHALY n. the condition of having a conical skull.
 |  | OXYCEPHALOUS | • OXYCEPHALOUS adj. having a conical skull, also OXYCEPHALIC. |  | OXYSULPHIDES | • oxysulphides n. Plural of oxysulphide. • OXYSULPHIDE n. a compound containing an element combined with oxygen and sulphur.
 |  | PHYLLOTAXIES | • phyllotaxies n. Plural of phyllotaxy. • PHYLLOTAXY n. the arrangement of leaves on a stem and in relation to one another, also PHYLLOTAXIS.
 |  | PHYTOALEXINS | • phytoalexins n. Plural of phytoalexin. • PHYTOALEXIN n. any substance produced by a plant as a defence against disease.
 |  | PSYCHOSEXUAL | • psychosexual adj. Of or relating to the psychological aspect or aspects of sexuality. • PSYCHOSEXUAL adj. of or relating to the mental, emotional, and behavioral aspects of sexual development.
 |  | PYRRHULOXIAS | • pyrrhuloxias n. Plural of pyrrhuloxia. • PYRRHULOXIA n. a grey-and-pink crested bunting of Central and SW North America, with a short parrot-like bill.
 |  | XANTHOPHYLLS | • xanthophylls n. Plural of xanthophyll. • XANTHOPHYLL n. a yellow carotenoid pigment found with chlorophyll in green plants and in egg yolks, also XANTHOPHYL.
 |  | XYLOGRAPHERS | • xylographers n. Plural of xylographer. • XYLOGRAPHER n. one who practises xylography, the art of making engravings on wood.
 |  | XYLOGRAPHIES | • xylographies n. Plural of xylography. • XYLOGRAPHY n. the art of making engravings on wood, esp. for printing.
 |  | XYLOPHONISTS | • xylophonists n. Plural of xylophonist. • XYLOPHONIST n. one who plays the xylophone.
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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 1Word.ws and WikWik.org.
 
 See this list for:English Wiktionary: 32 wordsScrabble in French: 6 wordsScrabble in Spanish: no wordScrabble in Italian: no wordScrabble in German: no wordScrabble in Romanian: no word
 
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