omnidirectional

Adjective

omnidirectional (not comparable)

1. 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. 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 17.1.2004, Harold Davis, Absolute Beginner's Guide to Wi-Fi Wireless Networking, Que Publishing, →ISBN, page 227
3. (rare) Of such an attack or effect: that encompasses all directions.
   • The ascendancy of the offensive over the defensive stems particularly from the ability of advanced weapon systems to penetrate enemy defenses. The combination of great speed and great altitude, taken together with numbers during a mass launch, ensures that selected targets will be reached....1959, Air University Quarterly Review, Volumes 11-12, U.S. Army Air Forces, page 44
   • 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.1962, Missiles and Rockets, American Aviation Publications, page 40