AAIPM (Advanced Artificial Intelligence (AI) for Project Management)
ABCP (Asset-Backed Commercial Paper)
Abrasive Blast Cleaning or Abrasive Blasting
Accelerating Rate Calorimetry (ARC)
Accounting Standard (or Financial Accounting Standard)
Accumulated Benefit Obligation (ABO)
ACI (American Concrete Institute)
Acid Dissociation Constant (Ka)
Acoustic Emission Testing (AE)
Acquisition of Technology and Knowledge
ACS (Automation Control System)
Active Bribery or Active Corruption
Active Labour Market Programmes
Actual Cost of Work Performed (ACWP)
Advanced Manufacturing Technology
Advanced Measurement Approach (AMA)
Advanced Project Management (APM)
Advanced Treatment Technology (Waste Water)
AFC (Approved for Construction)
AFE (Authority for Expenditure)
AFP (Active Fire Protection) System
AFPM (American Fuel and Petrochemical Manufacturers)
AGI (Artificial General Intelligence)
Agro Ecosystem (Agroecosystem)
AgTech (or Agricultural Technology)
AI (Artificial Intelligence) Capabilities
AIChE (American Institute of Chemical Engineers)
AIDS (Acquired Immune Deficiency Syndrome)
AIME (American Institute of Mining Engineers)
Air Operated Diaphragm (AOD) Pump
Airtight Drywall Approach (ADA)
Airtightness Test (or Air Pressure Test)
AISC (The American Institute of Steel Construction)
AISE (Association of Iron and Steel Engineers)
AISI (American Iron and Steel Institute)
AIST (Association for Iron and Steel Technology)
ALARA (As Low As Reasonably Achievable)
ALARP (As Low As Reasonably Practicable)
Algorithmic Trading (or Algo Trading)
Alkaline Fuel Cell (or Hydrogen-Oxygen Fuel Cell)
Allowable Stress or Allowable Strength
Alpha Particle (Symbol α, or Alpha Radiation)
Alternative Dispute Resolution (ADR)
American Chemistry Council (ACC)
American Conference of Governmental Industrial Hygienists (ACGIH)
American Society for Engineering Education (ASEE)
American Welding Society (AWS)
Amorphous Silicon (a-Si) Solar Cell
Amperage Interrupt Capability (AIC)
Ampere hour (or Amp-Hours, Ah/AH)
AMS (Automated Manifest System)
ANGA (America's Natural Gas Alliance)
Angular Momentum Quantum Number (or Azimuthal Quantum Number, ℓ)
Annual Contract Quantity (ACQ)
ANSI (American National Standards Institute)
Anticonvulsant (Anti-Convulsant)
Antidumping Duty (Anti-Dumping Duty)
APEC (Asia-Pacific Economie Cooperation)
API (American Petroleum Institute)
API RP 581: Risk Based Inspection Technology
APO (Asian Productivity Organization)
Apostille Convention (or Hague Convention)
Apparent Day (or Apparent Solar Day)
Approved Independent Safety Layer (AISL)
Area Key Plan for Lighting, Tray and Grounding Layout
ARR (Accounting Rate of Return)
Artificial Intelligence Risk Management Framework (AI RMF or Framework)
ASCE (American Society of Civil Engineers)
ASCII (American Standard Code for Information Interchange)
ASEAN (Association of Southeast Asian Nations)
ASHRAE (American Society of Heating, Refrigerating, and Air-Conditioning Engineers)
ASME (American Society of Mechanical Engineers)
ASME Pipeline and Piping Standard Codes: B31 Series
ASNT (American Society for Nondestructive Testing)
Asset Integrity Management (AIM)
ASTM (American Society for Testing and Materials)
Atmospheric Crude Distillation
ATSDR (Agency for Toxic Substances and Disease Registry)
Authorised Signature List (ASL)
Automated Data Processing (ADP)
Automatic (or Remote) Meter Reading (AMR) System
Average Particular (or Particular Average)
Average Wind Speed (or Velocity)
Avogadro's Number (or Constant)