EPSILON
Set to 5 different clues across 5 published puzzles, most often “Symbol of electromotive force” — The New York Times, Friday, 28 May 2010.
7 letters
Every clue on record, most used first
- Symbol of electromotive forceonce
The New York Times — Friday, 28 May 2010
- Fraternity letteronce
The New York Times — Thursday, 5 February 2009
- Electromotive force symbolonce
The New York Times — Friday, 21 November 2008
- Delta followeronce
The New York Times — Wednesday, 23 May 2007
- Small quantity symbol, in mathonce
The New York Times — Thursday, 6 March 1997