Crossword clues for the word: FOURTHDIMENSION The word FOURTHDIMENSION has appeared as an answer to at least 5 crossword clues on different crossword puzzles. Crossword clues for FOURTHDIMENSION Showing 1 to 5 of 5 results Clue(s) "Time, relatively speaking" "Time, to Einstein" Hypothetical unit in theory of relativity Time coordinate. Time, to a physicist