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 List of 15-letter words containing •••••••Click to add a ninth letter
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 There are 2 fifteen-letter words containing A, S, 3T and 3U| ULTRASTRUCTURAL | • ultrastructural adj. Of or pertaining to ultrastructure. • ULTRASTRUCTURAL adj. relating to ultrastructure. |  | ULTRASTRUCTURES | • ultrastructures n. Plural of ultrastructure. • ULTRASTRUCTURE n. biological structure and esp. fine structure, as of a cell, not visible through an ordinary microscope. |  
 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: 9 words
 - Scrabble in French: 1 word
 - Scrabble in Spanish: 7 words
 - Scrabble in Italian: 1 word
 - Scrabble in German: no word
 - Scrabble in Romanian: 12 words
 
 
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