"Trinitarian" refers to the belief in the Christian doctrine of the Trinity, which posits that God exists as three distinct persons: God the Father, God the Son (Jesus Christ), and God the Holy Spirit. These three persons are co-equal and co-eternal, meaning they are all fully God, yet they are not three separate gods but one divine essence. This doctrine is central to many Christian denominations, including Catholicism, Orthodoxy, and most branches of Protestantism. The concept emphasizes the relationship and unity among the three persons, highlighting their roles in creation, redemption, and the ongoing work in the world.