Crossword clue: a basis for comparison; a reference point against which other things can be evaluated

The most common answer is criterion (9 letters).

2 answers found in Letterora's clue database (Wikidata facts, Open Trivia DB, WordNet and Webster definitions — all licensed sources).

Possible answers

criterion 9 letters wn-def

a basis for comparison; a reference point against which other things can be evaluated

touchstone 10 letters wn-def

a basis for comparison; a reference point against which other things can be evaluated