Source : WordNet®

MDI
     n : a Sunni organization formed in 1989 and based in Pakistan;
         opposes missionary groups from the United States; has
         Lashkar-e-Tayyiba as its armed wing [syn: {Markaz-ud-Dawa-wal-Irshad}]

Source : Free On-Line Dictionary of Computing

MDI
     
        {Multiple Document Interface}