1
: large companies considered together as a powerful group
The tax proposal will be of most benefit to big business.
2
: an activity or product that makes a large amount of money
Tourism is big business in the region.
Cite this Entry
“Big business.” Merriam-Webster.com Simple Definition, Merriam-Webster, https://www.merriam-webster.com/simple/big%20business. Accessed 16 Apr. 2026.
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