This clue appeared in the NYT Crossword on Thursday, December 25, 2025 (30 Down). The answer is hidden below until you want it. Thursday puzzles often have a trick, such as a rebus (several letters in one square) or answers that bend the rules.
Answer length: 5 squares
First letter
R _ _ _ _
First and last letters
R _ _ _ I
Show the answer
About the answer
RADII as a word: (geometry) A line segment between any point of a circle or sphere and its center; (geometry) The length of this line segment.
RADII has been an answer 4 times in the NYT Crossword and Mini since December 25, 2025.
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