| Abbreviation | Definition |
|---|---|
| PPB | Parts Per Billion |
| PPBS | Predictive Parallel Branch Slicer |
| PPL | Parallel Pattern Library |
| PPL | Parma Polyhedra Library |
| PPL | Pemberville Public Library |
| PPLOC | Planar Point Location |
| PPMDAS | Parentheses, Powers, Multiplication, Division, Addition, Subtraction |
| PPPPPPP | Please Put Proper P*ssy Popping Pimples Please |
| PPS | Pattern Probability Strategy |
| PPS | Probability Proportional to Size |
| PPS | Provider Power Series |
| PPT | Probabilistic Polynomial Time |
| PPV | Positive Predictive Value |
| PPV | positive predictive value(s) |
| PR | PRobability |
| PR | Proof |
| PRDT | Passive Rule Design Tool |
| PRESS | Prediction Residual Error Sum of Squares |
| PRIM | Patient Rule Induction Method |
| PRIME | Platonic Realms Interactive Mathematics Encyclopedia |