| Acronym | Meaning |
| ADI | Austempered Ductile Iron |
| BIBRA | British Industrial Biological Research Association |
| SPINDO | Spectroscopic Potentials Adjusted Intermediate Neglect Of Differential Overlap |
| LCFA | Long Chain Fatty Acid(s) |
| SECI | Single Excitation Configuration Interaction |
| ABMA | American Boiler Manufacturers Association |
| MEKP | Methyl Ethyl Ketone Peroxide |
| APS | Active Pixel Sensor |
| NO | Natural Orbital |
| VAP | Valence Alternation Pair (bonding Configuration Model) |