DIRECTIONAL • E-FREE TRANSLATION.COM • Definition of Directional

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/dərˈɛkʃənəl/ /dɪrˈɛkʃɪnəl/ /daɪrˈɛkʃɪnəl/ Listen

adjective

directional adj.

Of or pertaining to direction (definition 2).

Serving to indicate direction.

(Radio) Transmitting radio signals in a specific direction, or receiving signals only from a narrow angle of directions, thus serving to indicate the direction from which radio signals are coming. Used of antennas; as, a directional antenna.

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Etymology of 'Directional'

Collaborative International Dictionary of English 0.48

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"Directional" Quotes from Famous Books

... the German Zimmerman's "hail shot" of 1573—case shot with a bursting charge and a primitive time fuze—but Shrapnel's invention was the first air-bursting case shot which, in technical words, "imparted directional velocity" to the bullets it contained. Shrapnel's new shell was first used against the French in 1808, but was not called by its inventor's ...

— Artillery Through the Ages - A Short Illustrated History of Cannon, Emphasizing Types Used in America • Albert Manucy

... and send through a manned scout." He grinned sourly. "Like me. If it looks good to the scout, he signals back, and they leave the warp anchored for a sort of permanent gateway until we can get a transport beam built. But we can't control the directional and dimensional scope of the warp. There are an infinity of ways it can go, until we have a guide beam transmitting from the other side. Then we can just scan a segment of space with the warp, and the ...

— Circus • Alan Edward Nourse

... He watched the teleceiver screen carefully, made a minute adjustment of the dial controlling the directional beam emitted by the ring in the number-one firing chamber, and at the last possible moment, snapped the remote-control switch that cut the power in the approaching test projectile. It hung dead in ...

— Sabotage in Space • Carey Rockwell

... hardly apparent, but true. Ever so slightly, the snub nose of the ZX-1 was swaying from side to side as it sped through the air; ever so slightly, her massive stern directional-rudders were wavering. ...

— Raiders Invisible • Desmond Winter Hall

... factors contributing to the solution of the problem of blind flying consist of a new application of the visual radio beacon, the development of an improved instrument for indicating the longitudinal and lateral position of an airplane, a new directional gyroscope, and a sensitive barometric altimeter, so delicate as to measure the altitude of an airplane within a few feet of ...

— Astounding Stories of Super-Science April 1930 • Various