radio-frequency adjective & noun. ['reɪdɪǝʊ,fri:kw(ǝ)nsi] E20.
[from RADIO noun + FREQUENCY.]
A. attrib. adjective. Pertaining to electromagnetic radiation with a frequency in the range used for telecommunication, greater than that of the highest audio frequency and less than that of the shortest infrared waves (i.e. between about 10⁴ and 10¹¹ or 10¹² Hz); operating at or having such a frequency; employing alternating current with such a frequency. E20.
b. noun. (Usu. as two words.) A frequency in the radio-frequency range. E20.

[TahlilGaran] English Dictionary ▲