What does Ot stand for?

Otolaryngologist (SAUS)

Otto Papiensis - Flourished, 12th century - Authority cited in pre-1607 legal work (DSA)

Otto's United States Supreme Court Reports - 91-107 United States - A publication (DLA)

Evergreen Helicopters of Alaska - ICAO designator (AD)

Objective Test - Psychology

Object Technology - Computer science (CDE)

Object Track (ACAE)

Oblique Talus - Medicine (EDAA)

Observer Target - Army

Occipitotransverse - Obstetrics

Occlusion Time (MAE)

Occupational Therapist - or Therapy - Medicine

Occupational Therapy (SAUS)

Occupational Therapy Technician - Navy

Occupational Training (AIE)

Occupied Territories (BJA)

Ocean Systems Technician - Navy (DNAB)

Ocean Transportation - Military

Ocular Tension - Medicine

Oedipus Tyrannus - of Sophocles - Classical studies (OCD)

Oesterreicher-Turner - Syndrome - Medicine (DB)

Offensive Tackle - Football

Offensive Threat (ACAE)

Office of Telecommunications - Department of Commerce

Office of Territories - Department of the Interior

Office of Transportation - Department of Agriculture

Off Tank

Off Time (WDAA)

Off Topic (SAUS)

Off-Topic - Astronomy term

Oil Tanker (SAUS)

Oil Temperature - Automotive engineering

Oil-Tempered (IAA)

Oil-Tight

Old Term

Old Terminology

Old Testament - of the Bible

Old Timer - Communications operators' colloquialism

Old Tom - British slang term for gin (ROG)

Old Top - Communications operators' colloquialism

Old - or Original Tuberculin - Also, TO - Medicine

Olfactory Threshold

Olfactory Tubercle - Neuroanatomy

On a Track - Rail - Shipping (DCTA)

Once-Through - Nuclear reactor technology

Oneida - NCIC Indian nation code (NCIC)

One Time

On Target - Military (CAAL)

On Time

Ontological Theory (VLIE)

On Track (VLIE)

On Trajectory (ACAE)

On Truck - Shipping

Onward Transfer (SAUS)

Opening Time (SAUS)

Open Topped - Container - Packaging (DCTA)

Open Transport - Computer science

Operability Test (SAUS)

Operating Temperature - Nuclear energy

Operating Theater

Operating Thetan (SAUS)

Operating Time

Operational instrumentation MDM-Tank (SAUS)

Operational Instrumentation Tank - NASA (NAKS)

Operational Technology - Nuclear energy (NRCH)

Operational Test (AFM)

Operational Testing (SAUS)

Operational Training (MCD)

Operational Trajectory - Aerospace (KSC)

Operations Team (MCD)

Operation Time (SAUS)

Opisthotonus - Medicine (EDAA)

Opportunity Target (SAUS)

Optatam Totius - Decree on Priestly Formation - Vatican II document

Optical Techniques group (SAUS)

Optical Technology (SAUS)

Optical Thickness (ADWA)

Optical Tool

Optical Tracker - NASA (NAKS)

Optical Tracking - NASA (KSC)

Optical-Transient - Astronomy

Optic Tectum - Anatomy

Optimality Theory - Linguistics (IEL)

Oral Testimony (BJA)

Oral Thrush - Medicine (MEDA)

Ordering Table (SAUS)

Oregon Territory - Prior to statehood

Oregon Trunk Railway - AAR code

Organizational Table

Organization Table

Organization Theory (SAUS)

Orienteering Tasmania - Australia - An association

Orifice Tube - Automobile air conditioning system

Original Transposed (SAUS)

Original Tuberculin - Medicine (DMAA)

Orotracheal - Medicine

Orthite (SAUS)

Orthogonal Trees (SAUS)

Ortho Tolidine (PDAA)

Oscillation Transformer - Radio

Osmium Tetroxide - Inorganic chemistry

Other - NCIC boat hull shape code (NCIC)

Other (VLIE)

Other Than

Other Time

Otis Elevator (SAUS)

Otis Test - Psychiatry (DAVI)

Otolaryngology - Medicine

Otology - Medicine

O'Toole's Group, Inc. - Toronto Stock Exchange symbol

Ought (ROG)

Outer Table (MCD)

Outer Tube

Outfit

Out of Territory (VLIE)

Out of Tolerance

Out of Town (GOBB)

Output - Computer science (IAA)

Output Tape (SAUS)

Output Terminal

Outside Test (SAUS)

Out Temperature (MCD)

Overall Test (KSC)

Overhead Transparencies

Overlap Technician

Overlap Telling (MCD)

Overseas Tankship (SAUS)

Overseas Territories (MCD)

Overseas Trade

Overseas Trading - A publication

Overseas Transportation (SAUS)

Over There (ADA)

Overtime

Overtone

Ovotransferrin - Biochemistry

Ovum Transfer (SAUS)

Owing To - Telegraphy (PCTE)

Oxygen Therapy (MELL)

Oxytocin - Endocrinology

Stations Open Exclusively to Operational Traffic of the Services Concerned - ITU designation (CET)

Tara Branch, Bruce County Public Library, Ontario - Library symbol - National Library of Canada (NLC)

Toledo-Lucas County Public Library, Toledo, OH - Library symbol - Library of Congress (LCLS)