FOS

Acronym	Definition
FOS	Financial Ombudsman Service (UK)
FOS	Fructo-Oligosaccharides (nutrional supplement)
FoS	Festival of Speed
FOS	Friends of Scouting
FOS	Free Online Scholarship (newsletter)
FOS	Fundamental Operating System
FOS	Faint Object Spectrograph
FOS	free/open source
FoS	Field of Study
FOS	Family of Systems
FOS	Florida Ornithological Society
FOS	Fructooligosacaridos
FOS	Factor Of Safety
FOS	From Outer Space
FOS	Fiber Optic Sensor
FOS	Foundations of Science (journal; course)
FOS	Figure of Speech
FOS	Federation of Workers Trade Unions (Haiti)
FOS	Freedom of the Seas (Royal Caribbean cruise ship)
FOS	Free Alongside Ship
FOS	First of Season (birding)
FOS	French Onion Soup
FOS	Forward Operating Site (US military)
FOS	Family of Schools
FOS	Faint Object Spectrometer
FOS	Free On Steamer
FOS	Freedom of Services (EU)
FOS	Flight Operations System
FOS	Friend of the Sea (Sustainable Seafood)
FOS	Flight Operation Segment
FOS	Full Operational Status
FOS	Florida Orthopaedic Society
FOS	Fabric Operating System (Brocade)
FOS	Factory Outlet Store (retail)
FOS	Full of Stool (medical slang)
FOS	Florida Oceanographic Society
FOS	Finger of Suspicion
FOS	Front Office System (software)
FOS	Full of Stuff (polite form)
FOS	Fellowship of the Sun (fictitious religious organization; True Blood; TV show)
FoS	Friends of Science Society (Calgary, AB, Canada)
FOS	Failure of Selection (US DoD)
FOS	Fuel Oil Supply
FoS	Followers of Set (roleplaying)
FOS	Field Operations Supervisor (Census)
FOS	Flight Operations Software
FOS	Fire Of Savannas
FOS	Frinton on Sea (Essex, UK)
FOS	Freedom of Speech, Inc
FOS	Feature of Size (geometric dimensioning)
FOS	Feet on Street (India)
FOS	Follow On Support
FOS	Field of Search (sensor management systems)
FOS	Fuel Operator Station
FOS	Found On Shelf
FOS	Follow On Spares
FOS	Follow on Sustainment
FOS	Foot of Slope (change of gradient)
FOS	Fall Of Shot
FoS	Focus on Solving
FOS	Full Operating System
FOS	Fuel Oil Spill
FOS	Father Over Shoulder
FOS	Front Offside (vehicular collision reports)
FOS	Fast Optical Shutter
FOS	Feasibility of Support
FOS	Fit or Split
FOS	Funky Old Soul
FOS	Forward Observer Software/System
FOS	Fleet Ordnance Support
FOS	Financial Operations Supervisor
FOS	Follow On Ship
FOS	Fellowship of the Services
FOS	former owner's stamp (used books)
FOS	Friends of Suai
FOS	Functional Operational Specification
FOS	Finkel-Biskis-Jinkins murine Osteogenicsarcoma (cancer research)