| Acronym | Meaning |
| HSF | Hiller-Sucher-Feinberg (equation For Calcn. Of Spin Densities And Charge Densities In Mols.) |
| MCD | Magnetic Circular Dichroism |
| SINGER | System-wide Information Network For Genetic Resources |
| LEACH | Leaching Evaluation Of Agricultural Chemicals |
| ICOH | International Commission On Occupational Health |
| AMAP | Arctic Monitoring And Assessment Program |
| PBP | Pheromone-binding Protein |
| SEC | Sulfite Evaporator Condensate |
| PPES | Photopyroelectric Spectroscopy |
| BLC | BACT/LAER Clearinghouse |