This clue appeared in the NYT Crossword on Monday, December 15, 2025 (55 Down). The answer is hidden below until you want it. Monday puzzles are the easiest of the week, so the clue is likely a plain definition.
Answer length: 4 squares
First letter
T _ _ _
First and last letters
T _ _ R
Show the answer
About the answer
TBAR as a word: Thiobarbituric acid reactive substances are formed as a byproduct of lipid peroxidation (i.e. as degradation products of fats) which can be detected by the T....
TBAR has been an answer 3 times in the NYT Crossword and Mini since December 15, 2025.
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