| adj. | 1. | of or pertaining to direction (definition 2). |
| 2. | serving to indicate direction. | |
| 3. | (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; |
| Adj. | 1. | directional - relating to or indicating directions in space; "a directional microphone" Antonyms: omnidirectional - not directional; "omnidirectional antenna" |
| 2. | directional - relating to direction toward a (nonspatial) goal; "he tried to explain the directional trends of modern science" | |
| 3. | directional - showing the way by conducting or leading; imposing direction on; "felt his mother's directing arm around him"; "the directional role of science on industrial progress" |
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