Crossword clues for the word: LEAPSECOND The word LEAPSECOND has appeared as an answer to at least 4 crossword clues on different crossword puzzles. Crossword clues for LEAPSECOND Showing 1 to 4 of 4 results Clue(s) Tiny adjustment to an atomic clock Tiny adjustment to Coordinated Universal Time Tiny change to a master clock Tiny time adjustment