This clue appeared in the NYT Crossword on Sunday, July 19, 2026 (92 Across). The answer is hidden below until you want it. Sunday puzzles are large (21 by 21) and themed, about as hard as a Wednesday or Thursday.
How to read this clue
"Abbr." or "for short" means the answer is itself an abbreviation or a shortened form.
Answer length: 3 squares
First letter
P _ _
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About the answer
PIS as a word: (mathematics) An irrational and transcendental constant representing the ratio of the circumference of a Euclidean circle to its diameter; approximately 3.14...; The sixteenth letter of the Classical and Modern Greek alphabets and the seventeenth in Old Greek.
PIS has been an answer 2 times in the NYT Crossword and Mini since July 19, 2026.
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