Crossword clues for the word: ANTIPROTON The word ANTIPROTON has appeared as an answer to at least 4 crossword clues on different crossword puzzles. Crossword clues for ANTIPROTON Showing 1 to 4 of 4 results Clue(s) Certain particle with an opposite charge Cosmic ray component Particle discovered in 1955 Something small and negative, demanding a new clue - or not, perhaps