| Acronym | Meaning |
| 3DAP | Three Dimensional Atom Probe |
| HLB | Hydrophilic-lipophilic Balance (of Surfactants) |
| LAN | Local-area Network |
| AHP | Analytic Hierarchy Process |
| IEL | Intraepithelial Lymphocyte |
| CISC | Configuration Interaction (with) Size-consistency (correction) |
| SHE | Standard Hydrogen Electrode |
| GIAO | Gage-independent Atomic Orbital |
| PXRF | Polarized X-ray Fluorescence |
| NLDA | Nonlocal Density Approxn. |