communication by means of radio waves
noun 1. a radio receiver with a directional antenna for determining the bearing of the receiver from a radio transmitter. noun 1. any navigational device that gives a bearing by determining the direction of incoming radio waves transmitted from a particular radio station or beacon See also goniometer (sense 2)
radiocurable ra·di·o·cur·a·ble (rā’dē-ō-kyur’ə-bəl) adj. Curable by irradiation.
radiodense ra·di·o·dense (rā’dē-ō-děns’) adj. Radiopaque.
noun 1. a navigational aid establishing a fix by means of the bearings of two known radio stations. Abbreviation: RDF.