This clue appeared in the NYT Crossword on Sunday, February 15, 2026 (65 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
D _ _
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About the answer
DDE as a word: (computing) Initialism of Dynamic Data Exchange; (calculus) Initialism of delay differential equation. [(calculus) a type of differential equation in which the derivative of the unknown function at a certai....
DDE has been an answer once in the NYT Crossword and Mini puzzles we have on file, which go back to October 23, 2025.
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