A

AACE International

AAIPM (Advanced Artificial Intelligence (AI) for Project Management)

Ab initio (Ab init)

Abandon

Abandonment

Abandonment Cost

Abatement

Abatement Cost

Abbreviation

ABCP (Asset-Backed Commercial Paper)

Abduct

Abductive Reasoning

Abel Tester

Ability

Able

Abnormal

Abnormal Event

Abnormal Obsolescence

Abnormal Situation

Abort

Aborted Cost

Abrasion Resistance

Abrasive

Abrasive Blast Cleaning or Abrasive Blasting

Absence

Absolute

Absolute Age

Absolute Difference

Absolute Discharge

Absolute Error

Absolute Frequency

Absolute Humidity

Absolute Permeability

Absolute Pressure

Absolute Title

Absolute Zero

Absorb

Absorbent

Absorber

Absorptance

Absorption

Absorption Chiller

Absorption Coefficient

Absorption Cooling

Absorption Oil

Absorption Refrigeration

Absorptivity

Abundance

Abuse

Abuse of Dominant Position

Abyss

AC (Alternating Current)

Accelerating Rate Calorimetry (ARC)

Acceleration

Accelerator

Accelerator Effect

Accelerometer

Accept

Acceptable Risk

Acceptance

Acceptance Criteria

Acceptance Rule

Acceptance Test

Acceptor

Access

Access Economy

Accessibility

Accident

Accident Initiated Event

Accommodate

Accommodation

Accompany

Accomplish

Account

Accountability

Accounting

Accounting Basis

Accounting Control

Accounting Convention

Accounting Period

Accounting Standard (or Financial Accounting Standard)

Accounting System

Accretion

Accrual

Accrual Accounting

Accrual Rate

Accrue

Accrued Benefit

Accrued Cost

Accumulate

Accumulated Benefit Obligation (ABO)

Accumulation

Accumulator

Accuracy

Accuse

Acequia

Acetylene (C2H2)

Achieve

Achievement

ACI (American Concrete Institute)

Acid

Acid Anhydride 

Acid Base Indicator

Acid Base Titration 

Acid Dissociation Constant (Ka)

Acid Gas

Acid Number

Acid Precipitation

Acid Rain or Acid Deposition

Acid Wash

Acidic Solution

Acidifying Potential (AP)

Acidity

Acknowledge

Acknowledgment

Acoustic

Acoustic Emission

Acoustic Emission Testing (AE)

Acoustic Insulation

Acoustic Wave

Acquaintance

Acquire

Acquisition

Acquisition of Technology and Knowledge

Acquisition Price

Acre

Acronym

Acrylate Polymer

Acrylic

Acrylic Resin

ACS (Automation Control System)

Act

Act of God

Actinide or Actinoid

Actinium (Ac)

Action

Action Tracking

Activate

Activated Complex

Activated Shelf Life

Activation Energy (Ea)

Activation Voltage

Activator

Active

Active and Passive Transport

Active Bribery or Active Corruption

Active Cooling

Active Labour Market Programmes

Active Power

Active Solar Heater

Activity

Activity Classification

Activity Delay

Activity Dependence

Activity Plan (AP)

Activity Priority

Activity Series 

Activity Splitting

Actual

Actual Cost (AC)

Actual Cost of Work Performed (ACWP)

Actual Finish (AF)

Actual Progress (AP)

Actual Start (AS)

Actual Yield

Actuarial Assumption

Actuarial Deficiency

Actuarial Liability

Actuator

Actuary

Acumen

Acupuncture

Acute

Acute Effect

Acute Exposure

Acute Hazard

Acute Health Effect 

Acute Risk

Acute Toxicity

Acyl Group

Ad hoc

Ad Hoc Investigation

Ad hoc Survey

Adapt

Adaptation

ADB (Asian Development Bank)

Add

Addendum

Addition

Additive

Additivity

Address

Adherent

Adhesion

Adhesion Promoter

Adhesion Tension

Adhesive

Adiabatic Process

Adjournment

Adjudicate

Adjudication

Adjudication Bond

Adjust

Adjustable Set Point

Adjustable Speed Drive (ASD)

Adjusted Disposable Income

Admin

Administer

Administered Price

Administration

Administrative

Administrative Control

Administrator

Admiration

Admire

Adobe

Adopt

Adoption

Adsorbed Gas

Adsorption

Adulterant 

Advance

Advance Payment

Advance Payment Bond

Advance Payment Guarantee

Advanced Manufacturing Technology

Advanced Measurement Approach (AMA)

Advanced Plastic Recycling

Advanced Project Management (APM)

Advanced Treatment Technology (Waste Water)

Advantage

Advection

Adversary

Adverse

Adverse Health Effect

Adverse Possession

Adverse Reaction

Advertise

Advocacy

Advocate

Aedes Mosquito

Aerate

Aerobic

Aerobic Bacteria

Aerodynamics

Aerosol

Aerospace

Aesthetic

AFC (Air Fin Cooler)

AFC (Approved for Construction)

AFD (Approved for Design)

AFE (Authority for Expenditure)

Affair

Affidavit

Affiliate

Affiliated Enterprise

Affinity Diagram

Afford

Afforestation

Affreightment

AFP (Active Fire Protection) System

AFPM (American Fuel and Petrochemical Manufacturers)

AFTA (ASEAN Free Trade Area)

Age

Age Price Profile

Ageing

Agency

Agent

Aggradation

Aggravate

Aggregate

Aggregate Demand (AD)

Aggregate Planning

Aggregate Risk

Aggregation

AGI (Artificial General Intelligence)

Agile

Agile Methodology

Agreement

Agricultural Pollution

Agricultural Waste

Agriculture

Agro-

Agro Ecosystem  (Agroecosystem)

Agrochemical

Agroecology

AgTech (or Agricultural Technology)

Ahead

AI (Artificial Intelligence)

AI (Artificial Intelligence) Capabilities

AI (Avian Influenza)

AIChE (American Institute of Chemical Engineers)

Aid

Aid Activity

Aid Effectiveness

Aid Untying

AIDS (Acquired Immune Deficiency Syndrome)

AIME (American Institute of Mining Engineers)

Air

Air Change Rate (ACH)

Air Conditioner

Air Diffuser

Air Distribution Diagram

Air Drying

Air Fuel Ratio (AFR)

Air Infiltration

Air Mass

Air Operated Diaphragm (AOD) Pump

Air Pollutant

Air Pollution

Air Pollution Control

Air Pollution Index (API)

Air Pollution Source

Air Quality Control

Air Quality Criteria

Air Quality Standard

Air Register

Air Retarder (or Air Barrier)

Air to Water Heat Pump

Air Waybill (AWB)

Airfreight

Airless Spraying

Airlock

Airtight Drywall Approach (ADA)

Airtightness Test (or Air Pressure Test)

Airtime

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)

Alarm and Trip Schedule

Alarm Flooding

Alarm Management

ALARP (As Low As Reasonably Practicable)

Albedo

Albumin

Alchemy 

Alcohol (- OH)

Alcohol by Volume (ABV)

Alcohol Proof

Aldehyde (or Alkanal)

Alert

Alert Level (or Threat Level)

Algae

Algebra

ALGOL (Algorithmic Language)

Algorithm

Algorithmic Trading (or Algo Trading)

Align

Alignment

Alignment Meeting

Aliphatic

Aliphatic Compound

Aliphatic Hydrocarbon

Alkahest

Alkali

Alkali Fusion

Alkali Metal

Alkaline

Alkaline Fuel Cell (or Hydrogen-Oxygen Fuel Cell)

Alkalinity

Alkane (CnH2n+2, Paraffin)

Alkene (CnH2n, Olefin)

Alkenyl (CnH2n-1)

Alkoxide (Alkyl Oxide)

Alkoxy (RO-)

Alkyd

Alkyd Resin

Alkyl

Alkylate

Alkylation

Alkyne

All-in Rate

All Other Like Perils

All Rights Reserved

All Risk Insurance

Allegation

Allege

Allergy

Alligator

Alligatoring

Allision

Allocate

Allotrope

Allow

Allowable Stress or Allowable Strength

Allowance

Alloy

Alloy Steel

Alloying

Alpha (Α α)

Alpha Decay 

Alpha Particle (Symbol α, or Alpha Radiation)

Alphabet

AlphaGo

Altcoin

Alter

Alternating Mode

Alternation

Alternative (or Alternate)

Alternative Dispute Resolution (ADR)

Alternative Energy

Alternative Fuel

Alternative Proposal

Alternator

Altitude

Alum

Aluminium or Aluminium (Al)

Alzheimer’s Disease (AD)

Amalgam 

Amazon Effect

Ambient

Ambient Computing

Ambient Light

Ambient Temperature

Ambiguity

Ambiguity Principle

American Chemistry Council (ACC)

American Conference of Governmental Industrial Hygienists (ACGIH)

American Society for Engineering Education (ASEE)

American Welding Society (AWS)

Americium (Am)

Amide (RCO-NH2)

Amine (NH2-)

Amino Acid

Ammonia (NH3)

Ammonium Nitrate (NH4)NO3

Ammonium Phosphates (NH4)3PO4

Amorphous

Amorphous Silicon (a-Si) Solar Cell

Amortization

Amortize

Amount

Amperage Interrupt Capability (AIC)

Ampere (A)

Ampere Hour (Ah/AH) Meter

Ampere hour (or Amp-Hours, Ah/AH)

Amphiprotic

Amphoteric

Amphoteric Metal

Amphoteric Oxide

Amplitude

AMS (Automated Manifest System)

Amusement

Anaerobic

Anaerobic Digester

Analog

Analogy

Analysis

Analytic Survey

Analytical Chemistry 

Analytical Framework

Analytics

Anchor

Ancient

Ancillary

Ancillary Drawing

Ancillary Service

Anecdotal

Anemia

Anemometer

ANGA (America's Natural Gas Alliance)

Anger Management

Angle

Angle of Incidence

Angle Valve

Angry

Angstrom (Å)

Angular Momentum Quantum Number (or Azimuthal Quantum Number, ℓ)

Anhydrite

Anhydrous

Anhydrous Ethanol

Animal

Animate

Animation

Anion

Anisotropy

Anneal

Annoy

Annual

Annual Contract Quantity (ACQ)

Annual Growth Rates

Annual Removal

Annual Solar Saving

Annualised Growth Rates

Annubar

Annuitant

Annuity

Anode

Anode Cap

Anode Corrosion Efficiency

Anodic Inhibitor

Anodic Protection

Anodising (Anodizing)

Anolyte

Anomaly

ANSI (American National Standards Institute)

ANSI Process Pump

Anthracite (or Hard Coal)

Anthrax

Anthropogenic

Anthropology

Antibiotics

Antibonding Orbital 

Anticipate

Anticonvulsant (Anti-Convulsant)

Antidumping Duty (Anti-Dumping Duty)

Antifoam (or Deformer)

Antifouling

Antifreeze Solution

Antiknock

Anti-monopoly Policy

Antimony (Sb)

Antireflection Coating

Antisqueeze

Antitrust

AOA (Activity on Arrow)

AON (Activity on Node)

APEC (Asia-Pacific Economie Cooperation)

Aperture

API (American Petroleum Institute)

API Gravity

API Oil and Water Separator

API Process Pump

API RP 581: Risk Based Inspection Technology

APL (A Programme Language)

APO (Asian Productivity Organization)

Apostille Convention (or Hague Convention)

Apparent

Apparent Day (or Apparent Solar Day)

Apparent Power (VA)

Apparent Temperature

Appeal

Appearance

Appellant

Appliance

Applicant

Application

Application Program

Apply

Apportionment

Appraisal

Apprentice

Approach

Appropriate

Appropriation

Appropriation Doctrine

Appropriation Method

Approval

Approve

Approved Independent Safety Layer (AISL)

Approved User

Approximation

AQI (Air Quality Index)

Aqua Regia 

Aquaculture

Aqueduct

Aqueous

Aqueous Solution

Aquifer

Arbitrage

Arbitrate

Arbitration

Arbitrator

Archaeology

Architect

Architectural Coating 

Architectural Engineering

Architecture

Archive

Area

Area Key Plan for Lighting, Tray and Grounding Layout

Arena

Argon (Ar)

Argue

Argument

Arithmetic

Arithmetic Growth

Armed Force

Armistice

Aromatic

Aromatic Hydrocarbon

ARR (Accounting Rate of Return)

Arraignment

Arrange

Arrangement

Arrangement Drawing

Array

Array Current

Array Sonic

Arrears

Arrester

Arrhenius Equation

Arrhythmia

Arrow

Arrow Diagram Analysis

Arsenic (As)

Art

Artesian Water

Arthrosis

Article

Artificial

Artificial Intelligence Risk Management Framework (AI RMF or Framework)

Artificial Recharge

Aryl

Artificial Intelligence (AI)

As Built Drawing

As of Date

As Sold Profitability

Asbestos

ASCE (American Society of Civil Engineers)

ASCII (American Standard Code for Information Interchange)

ASEAN (Association of Southeast Asian Nations)

Ash

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)

Aspect

Asphalt

Asphaltenes

Asphyxiant

Assemble

Assembly

Assembly Drawing

Assertion

Assess

Assessment

Asset

Asset Allocation

Asset-Backed Security (ABS)

Asset Category

Asset Integrity

Asset Integrity Management (AIM)

Asset Management

Assign

Assignment

Assignment List

Assignment Plan

Assize

Associate

Associated Financing

Associated Gas

Association

Assumed Risk

Assumption

Astatine (At)

Astern

Asthma

ASTM (American Society for Testing and Materials)

Asylum Seeker

Asymmetric Information

Asynchronous Generator

Astrology Zodiac

At Cost

ATG (Automatic Tank Gauging)

Atmosphere

Atmospheric Condition

Atmospheric Crude

Atmospheric Crude Distillation

Atmospheric Dispersion

Atmospheric Pressure

Atmospheric Stability

Atmospheric Storage Tank

Atmospheric Tank

Atmospheric Turbulence

Atom

Atomic Energy

Atomic Mass

Atomic Mass Unit (amu)

Atomic Number (Z)

Atomic Radius

Atomic Solid

Atomic Volume

Atomic Weight

ATSDR (Agency for Toxic Substances and Disease Registry)

Attach

Attachment

Attempt

Attendant

Attendant at Birth

Attenuation

Attic

Attribute

Attribute Data

Attribute Disclosure

Attribution

Audience

Audit

Audit Checklist

Audit Criteria

Audit Evidence

Audit Finding

Audit Interview

Audit Program

Audit Risk

Audit Team

Audit Trail

Auditability

Auditee

Augment

Augmented Balance

Austenite

Austenitic Stainless Steel

Austenitizing

Authentication

Authorisation (Authorization)

Authorise (Authorize)

Authorised Work

Authorised Signature List (ASL)

Authority

Autocatalysis

Autocatalytic Reaction

Autocorrection

Autocratic Leadership

Autodecomposition

Autogeneration

Autoignition Temperature

Autoimmunity

Automate

Automated Data Processing (ADP)

Automated System

Automatic (or Remote) Meter Reading (AMR) System

Automatic Damper

Automation

Autonomous

Autonomy

Autoregression

Autoxidation

Auxiliary

Auxiliary Electrode

Auxiliary Energy or System

Availability

Average

Average Cost

Average Demand

Average Gross

Average Individual Risk

Average Particular (or Particular Average)

Average Wind Speed (or Velocity)

Aviation

Aviation Gasoline

Avogadro's Law 

Avogadro's Number (or Constant)

Avoid

Avoidance

Avoidance Cost (or Cost Avoidance)

Avoided Cost

Award

Aware

AWG (American Wire Gauge)

Axial

Axial Compressor

Axial Fan

Axial Flow Compressor

Axial Flow Turbine

Axial Pump

Axiomatic

Axiomatic Approach

Axis

Azeotrope 

Azimuth Angle