LEMMA

Set to 5 different clues across 6 published puzzles, most often “Headword” — The New York Times, Friday, 30 August 1996.

5 letters

Every clue on record, most used first

Headword2 times
The New York Times — Friday, 30 August 1996
Proof part, sometimesonce
The New York Times — Wednesday, 29 December 2004
Helping theoremonce
The New York Times — Friday, 30 May 2003
Auxiliary proposition, in mathonce
The New York Times — Monday, 21 February 2000
Auxiliary propositiononce
The New York Times — Tuesday, 16 June 1998