omnidirectional

adj

1. (not-comparable)In every direction, especially of a radio system capable of transmitting or receiving signals in all directions, or of a microphone capable of detecting sound from all directions.

   “An omnidirectional radio beacon.”

2. (not-comparable)Having a ring-shaped radiation pattern, with equal radiation in all azimuthal directions.

   “The radiation pattern of an omnidirectional antenna looks like a doughnut, with the antenna in the center of the doughnut, as depicted in Figure 17.1.”

3. (not-comparable, rare)Of such an attack or effect that encompasses all directions.

   “Any defense posture that he may have that would be common for any ballistic missile would not suffice for a low-altitude omnidirectional high-speed nuclear ramjet missile.”

   “He’d known better at the time, damn it, but he’d let himself worry more over the possibility of losing an hour or two than her safety. He pounded his fists together and stared up at the sky with bitter eyes, but the alien stars mocked him, and his jaw clenched as he powered his com implant and sent out a full-powered omnidirectional pulse, heedless of the quarantine system’s sensors.”