omnidirectional

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adjective om·ni·di·rec·tion·al \ˌäm-ni-də-ˈrek-shnəl, -ˌnī-, -(ˌ)dī-, -shə-nəl\

Definition of omnidirectional

  1. :  being in or involving all directions; especially :  receiving or sending radio waves equally well in all directions omnidirectional antenna

1927

First Known Use of omnidirectional

1927

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