| Acronym | Meaning |
| SOP/ED | Split-operator Propagator (for) Electronically Diabatic (phenomena) |
| XES | X-ray Emission Spectroscopy |
| EA-EOMCC | Electron Attachment-equation Of Motion Coupled Cluster |
| FETAX | Frog Embryo Teratogenesis Assay-Xenopus |
| NPTN | National Pesticide Telecommunications Network |
| GDP | Gross Domestic Product |
| TOFA | Tall Oil Fatty Acids |
| SFFF | Sedimentation Field Flow Fractionation |
| CHELP | CHarges From ELectrostatic Potential |
| CDS | Compliance Data System (US EPA Air Database) |