theopaschitism A disputed teaching, regarded by some as a heresy, which arose during the sixth century, associated with writers such as John Maxentius and the slogan “one of the Trinity was crucified.” The formula can be interpreted in a perfectly orthodox sense and was defended as such by Leontius of Byzantium. However, it was regarded as potentially misleading and confusing by more cautious writers, including Pope Hormisdas (died 523), and the formula gradually fell into disuse.