Letter symbolizing the ratio of a circle's circumference to its radius

Crossword clue · 1 known answers · 1 appearances · Last seen in the New York Times crossword on February 1, 2026
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TAU
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The clue “Letter symbolizing the ratio of a circle's circumference to its radius” has appeared 1 times in our database with 1 different answers, so count the squares in your grid and check the crossings before you commit. Most recently it ran in the New York Times crossword on February 1, 2026, where the answer was TAU.

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