HAA
Appearance
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
Phrase
[edit]HAA
- (military) Initialism of heavy anti-aircraft.