what does lucency mean
lucency. Definitions: 1. In radiology, a region in an image caused by an absorber of lower x-ray attenuation than its surrounding tissues; in general, the opposite of opacity. The definition information for lucency is provided by Stedman's. You can search our medical dictionary here.. In radiology, a region in an image caused by an absorber of lower x-ray attenuation than its surrounding tissues; in general, the opposite of opacity. The definition information for lucency is provided by Stedman's.