RADIAN
Set to 2 different clues across 2 published puzzles, most often “Angular measurement” — The New York Times, Friday, 10 September 2004.
6 letters
Every clue on record, most used first
- Angular measurementonce
The New York Times — Friday, 10 September 2004
- Angle measurementonce
The New York Times — Sunday, 12 November 1995