What does Apt stand for?

Apartment (TBD)

Aptian (SAUS)

Apartment (VRA)

Academic Promise Test - Psychology (AEBS)

Accelerated Pavement Testing - FHWA (TAG)

Accelerator Production of Tritium - Physics

Acid Perfusion Test - Medicine (MELL)

Acid Phosphatase Test - Medicine (MELL)

Acquisition Pointing and Tracking (ACAE)

Actual Parameter Area (SAUS)

Adaptive Programming Technology

Address Pass Through (SAUS)

Adjustable Part Throttle - Automotive term (HAWK)

Admissions per Thousand - Hospitalization

Adobe Point (SAUS)

Adobe Postscript Point (SAUS)

Advanced Parallel Technology (SAUS)

Advanced Passenger Train - British

Advanced Passenger Transport (OA)

Advanced Patent Technique

Advanced Personnel Testing (ADWA)

Advanced Photoscale Technology

Advanced Pilot Training (PDAA)

Advanced Platform Technologies (SAUS)

Advanced Pointing Tracking (MCD)

Advanced Power Technology - Army

Advanced Probe Technology (AAEL)

Advanced Processing Technology (ABAC)

Advanced Promotion Technology (SAUS)

Advanced Propulsion Test (SSD)

Advanced Publishing Technology (SAUS)

Aerial Profiling of Terrain - System - Department of the Interior

Aerodyne Performance Boats, Miami, FL - Manufacturer code for watercraft hull identification number (USCG)

Africa Publications Trust - British

After Peak Tank (SAUS)

Aft Peak Tank - Shipping

Agency Planning Team (SAUO)

Age Progression Technique - Criminology (LAIN)

Airborne Pointer and Tracker

Airline Passenger Tariff - Travel industry (TRID)

Airman Proficiency Test (SAUS)

Airport (AFIT)

Airportable - British military (DMA)

Airport Control Tower (SAUS)

Airport Tower (SAUS)

Alabama Public Television - Public television network

Albany Passenger Terminal - Federal Railroad Administration identification code

Allarcom Pay Television Ltd. - Canada

Alliance for Photonic Technology (SAUS)

Alliance for Public Technology - Association (EA)

All-Patients Treated - Analysis - Medicine (EDAA)

All Picture Transfer (SAUS)

All-Purpose Terminal - Computer technology

All-Purpose Tire

All Purpose Tracker - Military (IUSS)

All-Purpose Tween - Microorganism growth medium

Alum Precipitated Toxoid - Medicine

Amberhill Petroleum Ltd. - Vancouver Stock Exchange symbol

American Peace Test (EA)

American Place Theatre (EA)

American Playwrights Theatre - Defunct

American Printing Technologies (DGA)

American Public Television (SAUS)

American Spirit Arms - NCIC firearms make code (NCIC)

Aminopropylisothiourea (SAUS)

Aminopropyllisothiourea (SAUS)

Ammonium Paratungstate - Metallurgy

Analog Pressure Transducer

Analog Program Tape - Computer science

Angeles Participating Mortgage Trust - AMEX symbol (SPSG)

Angeles Participating Mortgage Trust Class A (SAUS)

Angeles Ptc Mtge'A'SBI - AMEX symbol

Angular Position Transducer (SAUS)

Animation Photo Transfer - Animation technique developed by Disney Studio

Annular Proton Telescope

Antiphospholyrosine (SAUS)

Antiphosphotyrosine - Biochemistry

Antiplatelet Therapy - Medicine (MELL)

Antipyrine Test - Medicine (MELL)

Apartamento

Apartment

Apatani - Language code (ETLW)

Apollo Pad Test - NASA (KSC)

Apparent - Telegraphy (PCTE)

Application Programmers Toolkit (SAUS)

Application Program Title (SAUS)

Applications Productivity Tool (TIMI)

Applied Potential Tomography - Medicine

Appoint (AABC)

Aptitude (AABC)

Arbitrage Pricing Theory - Finance

Arizona Photopolarimeter Telescope (SAUS)

Armed Propaganda Team - Military

Armored Police Transporter - Police and security equipment

Armor-Piercing with Tracer - Ammunition

Army Parachute Team

Army Pay Tables (SAUS)

Army Pointing and Tracking (ACAE)

Artist Point - Disney (DIS)

Asia Pacific Telecommunications (SAUS)

Asia-Pacific Telecommunity - Thailand - Telecommunications

Asia Pacific Telescope

Asia Pacific Triennial of Contemporary Art - Queensland Art Gallery (APS)

Asset Protection Trust

Associated Personnel Technicians, Inc. - Commercial firm

Associated Pharmacologists and Toxicologists (EPA)

Association for/of Poetry Therapy (SAUO)

Association for Pediatric Therapists (EA)

Association for Play Therapy (NTPA)

Association for Poetry Therapy - Later, NAPT (EA)

Association for Practical Theology (EA)

Association for Preservation Technology - Later, APTI (EA)

Association for Productive Teaching (AEBS)

Association for Psychological Type (EA)

Association for Public Transportation - Massachusetts (EARSL)

Association of Pensioneer Trustees - British (DBA)

Association of Polysomnographic Technologists (EA)

Association of Polytechnic Teachers - British

Association of Printing Technologists - Later, IOP (DGA)

Association of Private Traders - British (BI)

Astronaut Preference Test - NASA (NASA)

AT & T Philips Telecommunications

AT&T Philips Telecommunications (SAUS)

Atrial Pacing Time - Medicine (EDAA)

Attached Proton Test (SAUS)

Augmented Programming Training - Computer science (IEEE)

Automated Pit Trading - Developed by London International Financial Futures Exchange - Stock exchange term

Automated Pit Trading System (EXCG)

Automate Picture Taking (SAUS)

Automatically Programmed Tool - Computer software - Computer science

Automatically Programmed Tooling (SAUS)

Automatically Programmed Tools (SAUS)

Automatic Parts Testing (IAA)

Automatic Peak Tracking - Medicine (RAWO)

Automatic Photoelectric Telescope (SAUS)

Automatic Photometric Telescope (SAUS)

Automatic Picture Taking (IEEE)

Automatic Picture Transmission - NASA

Automatic Planning and Technology (SAUS)

Automatic Position Telemetering

Automatic Position Telemetering (or Telemetry) (SAUS)

Automatic Programmed Tooling (SAUS)

Automatic Programmed Tools (SAUS)

Automatic Programming for Tools (SAUS)

Automatic Programming of Tools (SAUS)

Automatic Programming Technique (SAUS)

Automatic Programming Tool - Computer science (NITA)

Automatic Progression Testing (TEL)

Automation Planning and Technology

Automotive Professional Training (SAUS)

Avery Point - Connecticut - Seismograph station code, US Geological Survey - Closed (SEIS)

Fort Stewart/Hunter AAF Library System, Fort Stewart, GA - OCLC symbol (OCLC)

Jasper, TN - Location identifier - FAA (FAAL)

Lineas Aereas Petroleras - Colombia - ICAO designator (FAAC)

North Carolina State Agency for Public Telecommunications - Raleigh (TSSD)

Starwood Financial Tr' A' SBI - AMEX symbol - Formerly, Angeles Plc Mortgage'A'SBI

Troop Barge, Class B - Navy symbol - Obsolete