HCL
Set to 4 different clues across 5 published puzzles, most often “Corrosive chemical, to a chemist” — The New York Times, Sunday, 11 May 2008.
3 letters
Every clue on record, most used first
- Corrosive chemical, to a chemist2 times
The New York Times — Sunday, 11 May 2008
- Stomach acid, to a chemistonce
The New York Times — Thursday, 24 January 2008
- Stomach acid, symbolicallyonce
The New York Times — Wednesday, 25 September 2002
- Colorless gas with a pungent odor, for shortonce
The New York Times — Sunday, 16 December 2001