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 There is only one eleven-letter word containing SPHONI| PHOSPHONIUM | • phosphonium n. (Chemistry) the tetravalent positively-charged phosphorus cation R4P+. • PHOSPHONIUM n. the radical PH4, analogous to ammonium. |  
 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: 2 words
 - Scrabble in French: 1 word
 - Scrabble in Spanish: no word
 - Scrabble in Italian: no word
 - Scrabble in German: no word
 - Scrabble in Romanian: no word
 
 
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