FIX.

FIX

- A geographical position determined by visual reference to the surface, by reference to one or more radio NAVAIDs, by celestial plotting, or by another navigational device.

Source

FAA Pilot/Controller Glossary →

Related — Abbreviation.

ABEAM ABEAM
ABORT ABORT — To terminate a preplanned aircraft maneuver
AFM AFM — airplane flight manual
AGL AGL — above ground level
ALS ALS — approach light system
APU APU — auxiliary power unit