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[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
1925-30; omni- + directional Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the web for omnidirectional
  • Directional antennae, unlike the omnidirectional sort, transmit on a narrow beam.
  • If they are in a time-neutral or omnidirectional universe, then this is not so far fetched.
  • The universe's hellishly hot beginnings left behind an omnidirectional glow of microwaves.
  • At the heart of these vehicles is an omnidirectional robot wheel that the team has developed.
  • Of course solar system should expand, or the concept of omnidirectional expansion of space-time is wrong.
British Dictionary definitions for omnidirectional


/ˌɒmnɪdɪˈrɛkʃənəl; -daɪ-/
(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
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Word Origin and History for omnidirectional

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

Online Etymology Dictionary, © 2010 Douglas Harper
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