polyrodn.
/ˈpɒlɪrɒd/, U.S. /ˈpɑliˌrɑd/ Radio.
An antenna consisting of a rod of dielectric material (usually tapered) projecting from a waveguide.
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society > communication > telecommunication > radio communications > radio equipment > [noun] > aerial
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1945 Electronic Industries Sept. 222 Polyrod antenna, an antenna in which the radiating element is a rod of polystyrene.
1967 E. L. Gruenberg Handbk. Telemetry & Remote Control iv. 130 The most common type [of radiating element] is called a polyrod and the usual construction contains a dielectric that is linearly tapered over slightly more than half its length.
2001 Radio (Nexis) 1 July 7 The Polyrod antenna is an excellent illustration of radiation from a non-metallic device with a reasonable gain and directivity.
This entry has been updated (OED Third Edition, September 2006; most recently modified version published online March 2022).
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n.1945