What does OST stand for?

Austria Fund - NYSE symbol (SPSG)

Objectives, Strategy, and Tactics - Management system

Objective Start Time

Object Sorting Test - Psychology

Object Storage Target

Observation Skills Test

Observatoire des Sciences et des Techniques - France

Occlusal Splint Therapy - Medicine (MELL)

Ocean Surface Temperature - Marine science

Office of Science and Technology - Terminated 1973, functions transferred to National Science Foundation - Later, CSTD

Office of Strategic Trade (SAUS)

Office of Systems Operations - Marine science

Office of the Secretary of Transportation - Department of Transportation

Office of the Special Trustee

Offline Store - Computer science (GART)

Offshore Storage and Treatment (SAUS)

Oilfield Service Trucking & Crane, Inc. (EFIS)

Old Spanish Trail (SAUS)

One-Station Training

On Same Terms (WDAA)

On-Shift Test (IEEE)

On Site Technologies, Ltd. - Commercial firm

On-Site Test (IAA)

Open Source Telecom

Open Space Technology

Open Standards Terminal

Operating System Toolbox (SAUS)

Operating System Trap (SAUS)

Operational Sea Training (SAUS)

Operational Suitability Test - Aviation

Operational System Test (KSC)

Operations Support Team - NASA (MCD)

Operation Stress Test - Military technology (DDF)

Operator Station Task (ELAL)

Opposite - Telegraphy (PCTE)

Optical Sensing Trigger

Optical Star Tracker

Optic Support Table

Orbiter Support Trolley - NASA (NASA)

Orbit Stay Time

Order Shipping Time (SAUS)

Order Ship Time - DoD

Ordinary Spring Tides

Ordnance Shock Test - Military

Ordnance Special Training (AAG)

Ordnance Suitability Test

Organisation Socialiste des Travailleurs - Socialist Workers' Organization - Senegal - Political party (PPW)

Organizacion Socialista de los Trabajadores - Socialist Workers' Organization - Bolivia - Political party (PPW)

Organizacion Socialista de los Trabajadores - Socialist Workers' Organization - Costa Rica - Political party (PPW)

Originating Station Treatment - Telecommunications (TEL)

Osatu - Language code (ETLW)

Ostend - Belgium - Airport symbol (OAG)

Osteopathic (WGA)

Ostereichisher - NCIC firearms make code (NCIC)

Osterhout Free Library, Wilkes-Barre, PA - OCLC symbol (OCLC)

Outer Space Treaty (SAUS)

Out of Stock, Temporary - Business term

Output Stage Tube (SAUS)

Overseas Students Trust - British (AEBS)

Over Stress Testing

Oxford Superconductive Technology - Manufacturing company - British

Stratford Public Library, Ontario - Library symbol - National Library of Canada (NLC)

Osteotomy - Orthopedics (DAVI)