| Abbreviation | Definition |
|---|---|
| PWLS | Penalized Weighted Least-Squares |
| PWM | Position Weight Matrix |
| PX | Probability of X |
| PXY | Joint Probability of X and Y |
| PYR | Pyramid |
| PZF | Polynomial Zero-Finding |
| Q | Quantile |
| Q | Queue |
| QA | Qualified Actuary |
| QALY | quality-adjusted life years |
| QAP | Quadratic Assignment Problem |
| QASIM | Quick And Solid In Maths |
| QBCP | Quasi-Bicircular Problem |
| QBF | Quantified Boolean Formula |
| QBMO | Quadruple Base Mechanism of Creation (QBM-O)- The GOD'S Heart of Mathematical Operating System of Cr |
| QBS | Qualification By Similarity |
| QBV | Quantified Boolean Validator |
| QC | Quadratic Concave |
| QC | Quarter Circle |
| QCS | Quadruple Chain Sling |