Standard Oil
/ˌstændəd ˈɔɪl/
/ˌstændərd ˈɔɪl/
- a large US oil company established in 1870 by John D Rockefeller. In 1911 the US Supreme Court decided it restricted trade and divided it into 34 individual companies. Some of these companies later became ExxonMobil and Amoco.