What Does FOS Stand For?

FOS has more than one possible meaning :

• FOS - Faint Object Spectrograph
• FOS - Family Of Services
• FOS - Family Of Systems
• FOS - Fiber Optic Sensor
• FOS - First Order Sudden
• FOS - Flight Operations Segment
• FOS - Flight Operations Support
• FOS - Florida Ornithological Society Full Operational Status

If you know of another acronym for FOS, please suggest it as a new acronym for FOS.