| Acronym | Meaning |
| HNPCC | Hereditary Nonpolyposis Colorectal Carcinoma |
| HSK | Hylleraas Scherr Knight (variational Perturbation Procedure) |
| ARPA | Advanced Research Projects Agency |
| AF | Alternating Field Demagnetization |
| PSD | Particle Size Distribution |
| SMOW | Standard Mean Ocean Water |
| ODMR | Optically Detected Magnetic Resonance |
| TEAM | Total Exposure Assessment Methodology |
| CNMMN | Commission On New Minerals And Mineral Names |
| HSCT | High Speed Civil Transport (aircraft) |