Doctor of Sacred Theology

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The Doctor of Sacred Theology (Latin: Sacrae Theologiae Doctor, abbreviated STD), also sometimes known as Professor of Sacred Theology (Sacrae Theologiae Professor, abbreviated STP), is the final theological degree in the pontifical university system of the Roman Catholic Church,^[1] being the ecclesiastical equivalent of the academic Doctor of Theology (ThD) degree.

The two terms were once used in the ancient and formerly Catholic universities of Oxford, Cambridge, and Dublin, as an alternative name for the degree of Doctor of Divinity (DD), a practice which has now been discontinued.