1. adjective Of or being in the most advanced position, practice, or technology in a given area, activity, or endeavor. Sometimes hyphenated. Scientists at the local university are pioneering bleeding-edge cancer research. The company has released some of the most bleeding-edge smartphones in the world.

2. noun The most advanced position, practice, or technology in a given area, activity, or endeavor. The work their organization is doing at the moment is the bleeding edge of public health. Anthony's fascination with gadgetry always has him at the bleeding edge of the latest technology.