omnidirectional

[ om-nee-di-rek-shuh-nl ]
/ ˌɒm ni dɪˈrɛk ʃə nl /

adjective Electronics.

sending or receiving signals in all directions: an omnidirectional microphone.

Origin of omnidirectional

First recorded in 1925–30; omni- + directional

British Dictionary definitions for omnidirectional

omnidirectional
/ (ˌɒmnɪdɪˈrɛkʃənəl, -daɪ-) /

adjective

(of an antenna) capable of transmitting and receiving radio signals equally in any direction in the horizontal plane
(of a microphone or antenna) equally sensitive in all directions