Prismatic/prɪzˈmætɪk/ Definition 1 of 4Pro Tip 1/23D Shapes Think of 'prismatic' as describing three-dimensional objects similar to geometric prisms. The sculpture had a distinctly prismatic contour. Pro Tip 2/2Visible Edges 'Prismatic' implies a shape with visible edges and flat surfaces, like crystals or gems. Her jeweled necklace featured a prismatic pendant.