conglomerate
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/kənˈɡlɑːmərət/
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/kənˈɡlɒmərət/
A big company made by combining smaller companies.
He made the business into a huge media conglomerate.
A mixture of different things or parts.
The box contained a conglomerate of old toys.
A rock made of small stones stuck together by clay.
The geologist found a conglomerate rock in the riverbed.