Economic Definition of big business. Defined.
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Term big business Definition: A small number of the largest businesses (usually corporations) in our economy that (1) produce a substantial share of total output, (2) control a bunch of our economy's resources, and (3) have a great deal of market control in their respective industries. A listing of the Fortune 500 companies provides an idea for those businesses that have achieved the status of "big." The second estate obtains most its members from the presidents, shareholders, boards of directors, and high-level managers of big business.