Geomancy/ˈdʒiːəʊmænsi/ Definition 1 of 2Pro Tip 1/3Historical Practice Geomancy is an ancient practice, often associated with mysticism and history. She was fascinated by the historical practice of geomancy. Pro Tip 2/3Prediction Tool Geomancy is used for predicting future outcomes, similar to other divination methods. He used geomancy as a tool to predict his business success. Pro Tip 3/3Cultural Nuance Different cultures have their unique interpretations and techniques of geomancy. While traveling, she learned about the local form of geomancy.