adjective Electronics.

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

Origin of omnidirectional

First recorded in 1925–30; omni- + directional Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

British Dictionary definitions for omnidirectional



(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
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for omnidirectional

1927, from omni- + directional (see direction).

Online Etymology Dictionary, © 2010 Douglas Harper