Crossword clues for outer (prefix)AnswerClueEXOOuter (prefix)EPIOuter: Prefix.ECTOOuter: PrefixECTOuter (prefix)EXOPrefix meaning "outer"ASTROOuter space: PrefixECTPrefix for 'outer'ECTOPrefix for 'outer'ECTPrefix meaning "outer"ECTOPrefix meaning "outer"ASTROOuter space prefix for -naut