trinitarianism
/ˌtrɪnɪˈtɛriənɪzəm/
noun
- The Christian doctrine that God exists as three persons (Father, Son, and Holy Spirit) in one being.
- The council's decision helped define trinitarianism for centuries to come.
- Many theologians have written extensively about trinitarianism.
- Trinitarianism is a central belief in most Christian churches.