| Acronym | Meaning |
| LDA | Linear Discriminant Analysis |
| KHN | Knoop Hardness |
| IRIS | Incorporated Research Institutes For Seismology |
| ONP | Old Newspaper |
| DGE | Differential Gene Expression |
| EMA | Effective Mass Approxn. (for Impurity Energy Levels) |
| SPIN | Silica Phase-immobilized Nitroxide |
| NBSB | National Biomonitoring Specimen Bank |
| HSEES | Hazardous Substances Emergency Events Surveillance |
| ICAC | Institute Of Clean Air Companies |