dot-com
US /ˈdɑːt.kɑːm/
UK /ˈdɑːt.kɑːm/

1.
a company that conducts most of its business on the Internet
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Many dot-coms boomed during the late 1990s.
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The dot-com bubble burst in the early 2000s.
1.
relating to a company that conducts most of its business on the Internet
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The dot-com era saw rapid growth in technology.
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He invested heavily in dot-com stocks.