| Abbreviation | Definition |
|---|---|
| PHD | Pizza Hut Delivery |
| PHD | Playa Hata's Degree |
| PHD | Player Hating Degree |
| PHD | Please Help Doctor! |
| PHD | Please Hire Desperate |
| PHD | Poor Helpless Drunk |
| PHD | Poor, Hungry, and Determined |
| PHD | Positively Head Damaged |
| PHD | Power Hungry Dog |
| PhD | Prat of the highest Degree |
| PHD | Pre-Historic Dinosaur |
| PHD | Pretty Handsome Domestic |
| PHD | Pretty Heavy Drinker |
| PHD | Pretty High Dude |
| PHD | Prison of Hopelessness and Dispair |
| PHD | Probably Half Demented |
| PHD | Professionals Hu Dare |
| PHD | Promotion in Human Devolopment |
| PHD | Publicly Horrific Display |
| PHD | Push Here, Dummy |