“Greek letter that resembles an "I" atop an "O," as seen eight times in this puzzle” crossword clue

Reveal the answer to see why it works and where this clue has appeared before.PHI is the answer to the New York Times crossword clue “Greek letter that resembles an "I" atop an "O," as seen eight times in this puzzle”. It was last seen in the puzzle of January 11, 2026, where it runs at 107 Down and fills 3 squares. It crosses 3 other entries in that grid — those are listed below and are the quickest way to confirm the letters you already have.