An electromagnetic wave with a wavelength between one decimetre and one metre, corresponding to a frequency between three gigahertz and 300 megahertz (in the ultra-high frequency range).
Origin
1920s.
Definition of decimetre wave in US English:
decimetre wave
(USdecimeter wave)
noun
An electromagnetic wave with a wavelength between one decimetre and one metre, corresponding to a frequency between three gigahertz and 300 megahertz (in the ultra-high frequency range).