What is the answer to "Pi, rho, sigma, ___" in the USA Today Crossword?

The answer to the USA Today Crossword clue "Pi, rho, sigma, ___" is TAU (3 letters).

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Pi, rho, sigma, ___ USA Today Crossword Clue

Across clue · from the June 14, 2026 puzzle

Stuck on “Pi, rho, sigma, ___” from the USA Today Crossword? Here is the verified answer:

Answer

TAU

3 letters · Across · last seen June 14, 2026

1ASubmarine's measurement5 1DLittle globs4 2DPixar boy who travels to the "Communiverse"4 3DOinking animals4 4DChannel with many sitcom reruns3 5DDrum kit part5 6DSonos competitor4 6APure happiness5 7DIgnited3 8D"Who am ___ judge?"3 9DPlace that welcomes vulnerability9 10DLike long odds4