| Acronym | Meaning |
| PE | Population Equivalent (in Wastewater Treatment) |
| FRSS | Federal Register Search System |
| OLCAO | Orthogonalized Linear Combination Of Atomic Orbitals |
| IDL | Instrument Detection Limit |
| EVE | Ethyl Vinyl Ether |
| NECEEM | Nonequilibrium Capillary Electrophoresis Of Equilibrium Mix |
| HER | Human Estrogen Receptorpar |
| CPPA | Canadian Pulp And Paper Association |
| FCM | Finite-cluster Model (for Calcns. On Electromigration) |
| CRIP | Cysteine-rich Intestinal Protein |