STRATO
Set to 2 different clues across 4 published puzzles, most often “Prefix with sphere” — The New York Times, Sunday, 29 July 2007.
6 letters
Every clue on record, most used first
- Prefix with sphere3 times
The New York Times — Sunday, 29 July 2007
- Prefix with cumulusonce
The New York Times — Thursday, 25 November 2010