# AAA

> English word · Noun · frequency rank #9,990

## Definitions
1. Initialism of abdominal aortic aneurysm.
2. Initialism of aromatic amino acid.
3. Initialism of anti-aircraft artillery.
4. Initialism of animal-assisted activity.
5. Initialism of adult album alternative.
6. Initialism of advanced acoustic array.
7. Initialism of Access Approval Authority.
8. Initialism of accumulated adjustments account, in US Federal Income Tax.
9. Initialism of adaptive array antenna.
10. Initialism of airborne assault area.
11. Initialism of aircraft alert area.
12. Initialism of airport airspace analysis.
13. Initialism of angle angle angle, a geometric proof.
14. Initialism of arrival and assembly area.
15. Initialism of astronaut-actuated abort.
16. Initialism of attitude, awareness and accountability, a ski safety program.
17. Initialism of authentication, authorization and accounting.
18. Initialism of automated airlift analysis.
19. Initialism of administration, authorization, and authentication, in software security.
20. Initialism of AEGIS acquisition agent.
21. Initialism of aerospace engineering, applied mechanics, and aviation.
22. Initialism of air avenue of approach.
23. Initialism of airborne array aperture.
24. Initialism of allocations, assessments, and analysis.
25. Initialism of alternate assembly area.
26. Initialism of authorization accounting activity; authorized accounting activity.
27. Initialism of Acquisition Approval Authority.

## Easily confused with
- **as** (https://plainspell.com/en/vs/aaa-vs-as)
- **at** (https://plainspell.com/en/vs/aaa-vs-at)
- **an** (https://plainspell.com/en/vs/aaa-vs-an)
- **AM** (https://plainspell.com/en/vs/aaa-vs-am)
- **AL** (https://plainspell.com/en/vs/aaa-vs-al)
- **AD** (https://plainspell.com/en/vs/aaa-vs-ad)
- **ah** (https://plainspell.com/en/vs/aaa-vs-ah)
- **AP** (https://plainspell.com/en/vs/aaa-vs-ap)
- **AC** (https://plainspell.com/en/vs/aaa-vs-ac)
- **ai** (https://plainspell.com/en/vs/aaa-vs-ai)
- **aw** (https://plainspell.com/en/vs/aaa-vs-aw)
- **AR** (https://plainspell.com/en/vs/aaa-vs-ar)
- **AU** (https://plainspell.com/en/vs/aaa-vs-au)
- **AF** (https://plainspell.com/en/vs/aaa-vs-af)
- **ag** (https://plainspell.com/en/vs/aaa-vs-ag)
- **AK** (https://plainspell.com/en/vs/aaa-vs-ak)
- **AZ** (https://plainspell.com/en/vs/aaa-vs-az)
- **av** (https://plainspell.com/en/vs/aaa-vs-av)
- **ay** (https://plainspell.com/en/vs/aaa-vs-ay)
- **AE** (https://plainspell.com/en/vs/aaa-vs-ae)

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/word/aaa