1. (

• directional

) relating to or indicating directions in space; "a directional microphone" ;

2. (

• directional ,

) relating to direction toward a (nonspatial) goal; "he tried to explain the directional trends of modern science" ;

3. (

• directing ,
• directional ,
• directive ,
• guiding ,

) 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" ;