Theological/ˌθiːəˈlɑːdʒɪkl/ Definition 1 of 2Pro Tip 1/3Academic Tone Used in formal education, often at religious institutions. His theological thesis earned him a doctorate. Pro Tip 2/3Not Just Christianity Applies to all religions, not exclusively Christian theology. She's comparing Islamic and Hindu theological perspectives. Pro Tip 3/3Beyond Belief Focuses on systematic study, not personal belief or spirituality. Theological research often includes historical texts.