| Acronym | Definition |
|---|
| HPAA➣Health Policy and Administration |
| HPAA➣High-Power Air-To-Air Missile (Ace Combat game) |
| HPAA➣2-Hydroxyphosphonocarboxylic Acid |
| HPAA➣Hypothalamo-Pituitary-Adrenal Axis (endocrine system) |
| HPAA➣Hyde Park Art Association (Hyde Park, MA) |
| HPAA➣Hypothalamic-Pituitary-Adrenocortical Axis |
| HPAA➣Helicobacter Pylori Adhesin A (microbiology) |