- a
- adobe brick (en)
- ADP (en)
- advanced driver assistance system (en)
- advanced imaging technology machine (en)
- advanced lay-out (en)
- advanced persistent threat (en)
- adverse selection (en)
- advertainment (en)
- advertising man (en)
- advertising software (en)
- advisory committee (en)
- advisory (en)
- advocacy (en)
- adware (en)
- affinity marketing (en)
- affirmative action (en)
- affordability (en)
- agency fee (en)
- agent (en)
- aggressive accounting (en)
- agroecology (en)
- agrotourism (en)
- AI (en)
- aided recall test (en)
- air-entraining agent (en)
- air print (en)
- air-supported structure (en)
- airbag (en)
- airborne time (en)
- airliner (en)
- AIS (en)
- AIT machine (en)
- alcohol test (en)
- alcoholtest (en)
- algorithmics (en)
- aliasing (en)
- alien species (en)
- all-terrain cycle (en)
- all-terrain vehicle (en)
- all wheel steering vehicle (en)
- alliance manager (en)
- allochthonous species (en)
- allotment (en)
- alternate reality game (en)
- alternative asset management (en)
- alternative investment management (en)
- AM (en)
- amplitude modulation (en)
- anaerobic digestion (en)
- anchor (en)