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 There are 4 fifteen-letter words containing A, E, O, 3S and X| EXTENSIONALISMS | • extensionalisms n. Plural of extensionalism. • EXTENSIONALISM n. the state of being extensional.
 |  | HEXOSAMINIDASES | • hexosaminidases n. Plural of hexosaminidase. • HEXOSAMINIDASE n. either of two hydrolytic enzymes that catalyze the splitting off of a hexose from a ganglioside and are deficient in some metabolic diseases.
 |  | PROXIMATENESSES | • PROXIMATENESS n. the state of being proximate. |  | VEXATIOUSNESSES | • VEXATIOUSNESS n. the state of being vexatious. | 
 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: 31 wordsScrabble in French: 36 wordsScrabble in Spanish: 17 wordsScrabble in Italian: no wordScrabble in German: no wordScrabble in Romanian: no word
 
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