Crossword clues for the word: SCIO The word SCIO has appeared as an answer to at least 6 crossword clues on different crossword puzzles. Crossword clues for SCIO Showing 1 to 6 of 6 results Clue(s) "Cicero's ""I know""" I know: Lat. Italian name of Chios Shadow or ghost: Prefix Shadow: Comb. form. Shadow: Prefix.