a kite board that looks like a small windsurfer board or surfboard with footstraps A directional usually has 3 footstraps It rides best in one direction and has definite nose and tail ends A directional is typically 180 to 230 cm in length
If something such as a radio aerial, microphone, or loudspeaker is directional, it works most effectively in one direction, rather than equally in all directions at once. Dish aerials are highly directional
Directional hearing aids use two or more microphones or openings Sound coming from one direction, usually the rear facing direction, is reduced with this system This is done in order to give advantage to the forward facing sound Usually we want to hear what we are facing, and not what is behind us Directional hearing aids must have a minimum space between the microphones for this to be effective, thus increasing the size required for these instruments There are no CIC directional hearing aids for this reason: there is just not enough space to achieve the effect
Describes a board that is stiffer in the tail than in the nose, usually has a bigger nose than tail, and is meant to be ridden with stances set back from the center of the board Most snowboards are 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"
Directional means relating to the direction in which something is pointing or going. Jets of compressed air gave the aircraft lateral and directional stability