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There is only one thirteen-letter word beginning with BIREFRINGEN

BIREFRINGENCEbirefringence n. (Physics) The splitting of a ray of light into two parallel rays of perpendicular polarization by passage…
BIREFRINGENCE n. the refraction of light in an anisotropic material (as calcite) in two slightly different directions to form two rays.

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: 2 words
  • Scrabble in French: 3 words
  • Scrabble in Spanish: no word
  • Scrabble in Italian: no word
  • Scrabble in German: no word
  • Scrabble in Romanian: 3 words


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