This clue appeared in the NYT Crossword on Monday, June 22, 2026 (52 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: 5 squares
First letter
O _ _ _ _
First and last letters
O _ _ _ O
Show the answer
About the answer
ORTHO as a word: (countable, chemistry) An isomer of a benzene derivative having two substituents adjacent on the ring; (countable, astronomy) A certain type of flat eyepiece.
ORTHO has been an answer 2 times in the NYT Crossword and Mini since June 14, 2026.
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