Answer: GAMMAS
GAMMAS is a crossword puzzle answer that we have spotted 6 times.
Referring Clues:
- Greek letters
 - Some Greek letters
 - Ultrahigh-energy photons
 - Greek consonants
 - More Greek letters
 - Thirds in series
 
Last Seen In:
- Universal - December 15, 2017
 - Universal - February 20, 2015
 - Wall Street Journal - June 25, 2010
 - Universal - June 09, 2010
 - Universal - September 14, 2007
 - King Syndicate - Eugene Sheffer - May 26, 2004
 - Washington Post - August 13, 2001
 
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