HAA

See also: Appendix:Variations of "haa"

English

Noun

HAA (countable and uncountable, plural HAAs)

1. Initialism of high-altitude airship.
2. (chemistry) Initialism of haloacetic acid.

Proper noun

HAA

1. Initialism of Honolulu Academy of Arts.
2. (US politics) Initialism of Healthy Americans Act.

Phrase

HAA

1. (military) Initialism of heavy anti-aircraft.