This clue appeared in the NYT Crossword on Sunday, March 1, 2026 (49 Down). 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.
Answer length: 3 squares
First letter
S _ _
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About the answer
SPF as a word: Initialism of sun protection factor. [An indication of how long a sunscreen remains effective when applied to the skin.]; Initialism of single point of failure. [A component in a device, or a point in a network, that, if it were to fail, would cause the entire device or network ....
SPF has been an answer 5 times in the NYT Crossword and Mini since March 1, 2026.
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