Definition
A ground-based radio navigation aid that transmits signals in all directions on Very High Frequency (VHF), allowing aircraft equipped with a VOR receiver to determine their bearing to or from the station along any of 360 selectable courses called radials.
Plain English
A radio beacon on the ground that broadcasts in every direction. An airplane's instrument can read the signal and tell the pilot which direction the station is from the aircraft, and which path leads straight to or away from it.
Context Anchor
Pilots encounter VORs when tuning navigation radios, following instrument routes, checking position, or using a VOR as a backup to GPS.
Derivation
VHF refers to Very High Frequency, the radio band the station uses (108.0–117.95 MHz). 'Omnidirectional' comes from Latin omnis (all) plus 'directional' — broadcasting in all directions. 'Range' here means a navigation aid that provides bearing information, an older usage carried over from earlier radio range systems.
Why Pilots Care
VORs supply a dependable, non-GPS navigation reference that defines federal airways and supports precision instrument procedures when satellite navigation is unavailable or restricted.
Analogy
Think of a VOR like a lighthouse that sends different direction information all the way around the horizon. The airplane’s receiver reads that information and helps the pilot know which line from the station the airplane is using.
Intuition Check
A VOR is not GPS and does not show a full moving-map position by itself. It gives direction information relative to a ground station, which the pilot or equipment uses for navigation.
Example Sentence 1
After takeoff, the pilot tuned the VOR to 113.5 and tracked the 270 radial outbound toward the next waypoint.
Example Sentence 2
ATC issued a clearance to proceed direct to the VOR and then outbound on the airway to the next fix.