RAD Medicine Abbreviation

Radiology

That branch of medicine dealing with the diagnostic and therapeutic applications of radiant energy, including x-rays and radioisotopes.

Rld

Reactive Airways Disease

Receptor Affinity Distribution

Reproductive Assocmates of Delaware

Respiratory Assist Devices

Review and Demonstration

Roentgenjadministered Dose

Radial

Line from a VOR or NDB. For example, the 180 radial from a VOR represents a line south of that VOR. In a direction directly outward from the center of a circle or sphere or from the axis of a cylinder. The spokes of a wheel, for example, are radial. A magnetic bearing extending from a very high frequency omni-range and/or tactical air navigation station.