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There are 2 fifteen-letter words beginning with ULTRAF

ULTRAFASTIDIOUSultrafastidious adj. Extremely fastidious.
ULTRAFASTIDIOUS adj. extremely fastidious.
ULTRAFILTRATIONultrafiltration n. Filtration through a semipermeable membrane that only allows small molecules through.
ULTRAFILTRATION n. filtration through a medium (as a semipermeable capillary wall) which allows small molecules (as of water) to pass but holds back larger ones (as of protein).

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.

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See this list for:

  • English Wiktionary: 7 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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