Economic Definition of killer application. Defined.
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Term killer application Definition: A computer program that is so incredibly useful, popular, and profitable that the company responsible for development achieves enormous growth in a relatively short time period. Several computer companies developed killer applications during the 1980s and 1990s, which contributed greatly to the computer revolution. The Lotus 1-2-3 spreadsheet program was among the first, and perhaps most noted, killer applications. This program motivated millions of businesses and consumers in the early 1980ds to purchase personal computers.