Answer: CESIUM
CESIUM is a crossword puzzle answer that we have spotted 12 times.
Referring Clues:
- Highly reactive metal
 - Element in photoelectric cells
 - Soft, silvery-white element
 - Element #55
 - Element in atomic clocks
 - Atomic number 55
 - Rare metallic element
 - Soft metal
 - Silver-white element
 - Atomic clock element
 - Element used in atomic clocks
 - Atomic no. 55
 
Last Seen In:
- Netword - August 28, 2020
 - LA Times - November 22, 2018
 - Universal - August 27, 2017
 - LA Times - October 03, 2015
 - USA Today - June 11, 2015
 - King Syndicate - Thomas Joseph - August 15, 2014
 - Wall Street Journal - October 18, 2013
 - King Syndicate - Thomas Joseph - August 29, 2013
 - King Syndicate - Thomas Joseph - June 20, 2012
 - Netword - April 03, 2010
 - King Syndicate - Premier Sunday - September 28, 2008
 - King Syndicate - Eugene Sheffer - August 14, 2008
 - New York Sun - March 04, 2008
 - LA Times Sunday - November 18, 2007
 - King Syndicate - Eugene Sheffer - May 30, 2007
 - King Syndicate - Thomas Joseph - May 17, 2007
 - USA Today - May 16, 2007
 - New York Sun - May 09, 2007
 - New York Times - April 13, 2007
 - Washington Post - August 13, 2006
 
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