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Greek letter that looks like an "O" superimposed with an "I" Crossword Clue

3 letters · New York Times · Tuesday, May 5, 2026 · 5-Down

Appeared in 1 New York Times Crossword: Tuesday, May 5, 2026.

Exact puzzle match · New York Times · May 5, 2026 · 5-Down · 3 letters

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What does this clue mean?

the 21st letter of the Greek alphabet

noun

WordNet® (Princeton University)

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