Crossword clues for the word: PRION The word PRION has appeared as an answer to at least 6 crossword clues on different crossword puzzles. Crossword clues for PRION Showing 1 to 6 of 6 results Clue(s) Dovelike petrel Petrel bird with saw-toothed bills Self-replicating protein that causes mad cow disease Southern sea bird Southern seabird There's no rip, oddly, in the infectious protein particle