| Acronym | Meaning |
| TAN | Total Acid Number |
| KHN | Knoop Hardness |
| MINLP | Mixed-integer Nonlinear Programming |
| CRAF | Comet Rendezvous Asteroid Flyby |
| APCS | Argonne Premium Coal Sample |
| FAPS | Field-effect-addressable Potentiometric Sensor |
| FSTRAC | Federal-State Toxicology And Risk Analysis Committee |
| MBP | Mixed Basis Pseudopotential (method For Electronic-structure) |
| ETANN | Electronically Trainable Analog Neural Network |
| NFE-TB | Nearly-free-electron Tight-bonding (for Electronic Structure) |