Degree/dɪˈɡriː/ Definition 1 of 6Pro Tip 1/2Not a Flat Measure When measuring angles, degrees show rotation, not flat distance. The hands of a clock form a 90-degree angle at 3 o'clock. Pro Tip 2/2Full Circle 360 degrees make a full circle, useful in navigation and design. The skater completed a flawless 360-degree spin.