Of or pertaining to high frequency sound or other radiation. / Occurring or doing something very frequently.

(radio) The frequency area from 3 MHz through 30 MHz, commonly used for radio broadcasting.

(broadcasting, radio, television) The frequency area from 30 MHz through 300 MHz, commonly used for radio and TV broadcasting.

(telecommunications) The frequency area from 300 MHz through 3 GHz, commonly used for TV broadcasting.

(telecommunications) The frequency area from 3 GHz through 30 GHz, commonly used for microwave devices, WLAN, and radars.

Synonym of program trading

plural of high-frequency gravitational wave

(physics, astronomy) gravitational radiation, in the megahertz to gigahertz region, which is proposed to have been produced by the Big Bang or by the collision of massive astronomical objects or artificially in the laboratory. Gravitational waves having frequencies higher than 100 kHz.

Alternative spelling of high-frequency gravitational wave

plural of high frequency gravitational wave