| Abbreviation | Definition |
|---|---|
| PHA | phytohaemagglutinin |
| PHA | posterior hypothalamic area |
| PHA | posthypnotic amnesia |
| PHA | primary hyperaldosteronism |
| PHA | pseudohypoaldosteronism |
| PHA | public health agency |
| PHA | Public Health Alliance (incorporated into UKPHA) |
| PHA | Public Health Association |
| PHA | pulse-height analyser |
| PHANYC | Public Health Association of New York City (!) |
| PHB | personal health budget |
| PHB | Pharmacopoeia Britannica |
| PHB | phenobarbital |
| PHB | phenylbutzone |
| PHB | phosphorylase B |
| PHB | porcine haemoglobin |
| PHB | preventive health behaviour |
| PHC | parahippocampal cortex |
| PHC | pharmaceutical chemist |
| PHC | phosphtidyl choline |