FOS

Acronym	Definition
FOS	Fabric Operating System (Brocade)
FOS	Factor Of Safety
FOS	Factory Outlet Store (retail)
FOS	Failure of Selection (US DoD)
FOS	Faint Object Spectrograph
FOS	Faint Object Spectrometer
FOS	Fall Of Shot
FOS	Family of Systems
FOS	Fast Optical Shutter
FOS	Father Over Shoulder
FOS	Feature of Size (geometric dimensioning)
FOS	Federation of Workers Trade Unions (Haiti)
FOS	Fellowship of the Services
FOS	Fiber Optic Sensor
FOS	Field of Search (sensor management systems)
FoS	Field of Study
FOS	Field Operations Supervisor (Census)
FOS	Figure of Speech
FOS	Financial Operations Supervisor
FOS	Finger of Suspicion
FOS	Fire Of Savannas
FOS	First of Season (birding)
FOS	Fit or Split
FOS	Fleet Ordnance Support
FOS	Flight Operation Segment
FOS	Flight Operations Software
FOS	Flight Operations System
FOS	Florida Oceanographic Society
FOS	Florida Ornithological Society
FOS	Florida Orthopaedic Society
FOS	Follow On Ship
FOS	Follow On Spares
FOS	Follow On Support
FOS	Follow on Sustainment
FoS	Followers of Set (roleplaying)
FOS	former owner's stamp (used books)
FOS	Forward Observer Software/System
FOS	Forward Operating Site (US military)
FOS	Found On Shelf
FOS	Free Alongside Ship
FOS	Free On Steamer
FOS	Free Online Scholarship (newsletter)
FOS	free/open source
FOS	Freedom of Speech, Inc
FOS	French Onion Soup
FOS	Friends of Scouting
FOS	Frinton on Sea (Essex, UK)
FOS	From Outer Space
FOS	Front Offside (vehicular collision reports)
FOS	Fructo-Oligosaccharides (nutrional supplement)
FOS	Fructooligosacaridos
FOS	Fuel Oil Spill
FOS	Fuel Oil Supply
FOS	Fuel Operator Station
FOS	Full of Stool (medical slang)
FOS	Full of Stuff (polite form)
FOS	Full Operating System
FOS	Full Operational Status
FOS	Functional Operational Specification
FOS	Fundamental Operating System
FOS	Funky Old Soul
FOS	Failover Services
FOS	Family of Service
FOS	Fedora Operating System
FOS	File Output Stream