This clue appeared in the NYT Crossword on Friday, July 10, 2026 (21 Across). The answer is hidden below until you want it. Friday puzzles are themeless and hard, with clues that are vague on purpose.
Answer length: 4 squares
First letter
E _ _ _
First and last letters
E _ _ S
Show the answer
About the answer
EELS as a word: (spectroscopy) Initialism of electron energy loss spectroscopy.
EELS has been an answer 9 times in the NYT Crossword and Mini since November 14, 2025.
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