(also dot·com ) / ˌdɒt ˈkɒm; NAmE ˌdɑːt ˈkɑːm/ noun
a company that sells goods and services on the Internet, especially one whose address ends '.com' :
The weaker dot-coms have collapsed.
a dot-com millionaire
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WORD ORIGIN
1990s: from .com in an Internet address, indicating a commercial site.