A company that owns several smaller businesses whose products or services are usually very different. (Cambridge Dictionary)
A conglomerate is a large business firm consisting of several different companies. (Collins Dictionary)
A thing consisting of a number of different and distinct parts or items that are grouped together. (Oxford Dictionaries)
Made up of parts from various sources or of various kinds. (Merriam – Webster)
Conglomerate. Sedimentary rocks.
An Example of a Company Conglomerate.