omnidirectionaladj.
/ˌɒmnᵻdᵻˈrɛkʃn̩(ə)l/, U.S. /ˌɑmnəˌdaɪˈrɛkʃ(ə)nəl/, /ˌɑmnəˌdəˈrɛkʃ(ə)nəl/; see also omni- comb. form and directional adj. Chiefly Radio and Telecommunications.
Of equal sensitivity or power in all directions (usually, all horizontal directions).
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the world > space > direction > [adjective] > all or every
quaquaversal1691
omnidirectional1927
1927 Daily Tel. 22 Mar. 13 The Marconi Company quoted £66,153 for the Beam system and £29,163 for a system of omni-directional communication.
1952 E. A. Laport Radio Antenna Engin. ii. 94 Experience has been gained with vertical radiators at many hundreds of broadcast stations, each employing one or more for omnidirectional or directive radiation.
1976 CB Mag. June 7/1 (advt.) Highest signal radiation efficiency in the desired vertical plane and omnidirectional, full coverage transmitting and receiving pattern.
1994 L. A. Graf Traitor Winds vi. 80 Chekov smiled and played with floating the omnidirectional transmitter into a more discriminate angle.
This entry has been updated (OED Third Edition, March 2004; most recently modified version published online March 2022).
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adj.1927