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Electronic Application Microsoft (swhx.exe).
On Linux this can be started with WINE (cd /OED; wine swhx.exe)
The Oxford English Dictionary is the internationally recognized authority on the English Language, defining more than 500,000 words and tracing their usage through 2.5 million quotations from a wide range of literary and other sources. The text on the CD-ROM comprises the full text of the OED2nd Edition , plus the three Additions volumes, as well as 7,000 new entries from the OED's continuing research.
Most importantly, OED v4.0 on CD-ROM boasts superb search-and-retrieval software, designed specifically for the electronic version, enabling you to investigate the Dictionary in ways not possible with the print edition. Questions which might have taken years of patient research can now be answered in seconds.