| Acronym | Meaning |
![](file.png) | PTM | Posttranslational Modification |
![](file.png) | BSO | Basic Symmetric Operator (in Second-quantization Calculations) |
![](file.png) | TPE | Threshold Photoelectron |
![](file.png) | FIFRA | Federal Insecticide |
![](file.png) | TTSS | Type III Secretion System |
![](file.png) | ISS | Ion Scattering Spectroscopy |
![](file.png) | RIP | Rapid Isothermal Processing |
![](file.png) | CCID | Confidential Chemicals Identification System |
![](file.png) | EGR | Exhaust Gas Recirculation |
![](file.png) | TCA | Traveling-cluster Approximation (a Generalization Of CPA For Electronic-structure Of Alloys) |