A Christian theological belief that God exists in two distinct persons or principles, rather than three as in traditional Trinitarianism.
From Latin 'bi-' meaning two and 'unitarius' meaning unitary; formed in the 17th century to describe Christian denominations rejecting the Trinity doctrine. The suffix '-ism' indicates a religious belief system.
This word reveals the heated theological debates of early Christianity—groups literally fighting over whether God was one, two, or three persons, with whole communities getting branded as heretics based on their answer to this cosmic math problem.
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