Crossword clues for the word: EXA The word EXA has appeared as an answer to at least 6 crossword clues on different crossword puzzles. Crossword clues for EXA Showing 1 to 6 of 6 results Clue(s) "Metric prefix denoting 10^18 (or, backward, jazz guitar?)" "Prefix meaning ""one quintillion""" "Prefix meaning ""one-quintillionth""" "Prefix meaning 1,000,000,000,000,000,000th" "Prefix that follows giga, tera and peta" Prefix past tera- and peta-