HAA
See also: Appendix:Variations of "haa"
English edit
Noun edit
HAA (countable and uncountable, plural HAAs)
- Initialism of high-altitude airship.
- (chemistry) Initialism of haloacetic acid.
Proper noun edit
HAA
- Initialism of Honolulu Academy of Arts.
- (US politics) Initialism of Healthy Americans Act.
Phrase edit
HAA
- (military) Initialism of heavy anti-aircraft.