1. Relating to or indicating directions in space
   "a directional microphone" 
2. Relating to direction toward a (nonspatial) goal
   "he tried to explain the directional trends of modern science" 
3. Showing the way by conducting or leading; imposing direction on
   "the directional role of science on industrial progress"
   - directing, directive, guiding

See also: direction, directionality, leading

Antonym: omnidirectional

Encyclopedia: Directional

• switch-ivy
• switchback
• switchblade
• switchblade knife
• switchboard
• switchboard operator
• switcher
• switcheroo
• switching
• switchman
• swither
• Switzerland
• swive
• swivel
• swivel chair
• swivel pin
• swivet
• swiz
• swizz
• swizzle
• swizzle stick
• swob
• swollen
• swollen-headed
• swoon