parent company, or parent undertaking
This is a company that owns or controls another company or companies. Any company that it owns is called a subsidiary.
USA
Also known as the parent.
A company which owns or controls the majority of the outstanding voting stock (or other equity) in another company or otherwise has the right to appoint and remove a majority of the board of directors (or other managing body) of that other company.
See holding company.
Related links
Practical Law Dictionary. Glossary of UK, US and international legal terms. www.practicallaw.com. 2010.