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 There are 4 twelve-letter words containing A, N, 2O, U and X| AUTOXIDATION | • autoxidation n. (Chemistry) A spontaneous oxidation reaction that results in the slow, flameless combustion of a material. • AUTOXIDATION n. oxidation by direct combination with oxygen at ordinary temperatures.
 |  | FAUXBOURDONS | • FAUXBOURDON n. (French) a type of improvised polyphony, popular in England from the 15th century to the Reformation, also FABURDEN. |  | PNEUMOTHORAX | • pneumothorax n. (Medicine) Presence of air inside the pleural cavity, usually caused by injury either to the lung or the chest wall. • PNEUMOTHORAX n. accumulation of air or gas in the pleural cavity.
 |  | XANTHOMATOUS | • xanthomatous adj. Of or relating to xanthoma or xanthomatosis. • XANTHOMATOUS adj. of or like a xanthoma, a skin disease marked by the development or irregular yellowish patches upon the skin.
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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: 41 wordsScrabble in French: 13 wordsScrabble in Spanish: 8 wordsScrabble in Italian: no wordScrabble in German: no wordScrabble in Romanian: 4 words
 
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