1relating to or indicating the direction in which someone or something is situated or moving:directional signs wherever two paths joined
relating to, influencing, or exemplifying the latest trends in fashion:a directional womenswear designer
2having a particular direction of motion, progression, or orientation:coiling the wire permits directional flow of the magnetic flux
relating to, denoting, or designed for the projection, transmission, or reception of light, radio, or sound waves in or from a particular direction or directions:a directional microphone