| Abbreviation | Definition |
|---|---|
| ISFC | Indicated Specific Fuel Consumption |
| ISG | Idle Stop & Go |
| ISMG | Infinitely Stackable Modular Gearbox |
| ITB | Individual Throttle Bodies |
| ITMO | Information Technologies Mechanics and Optics |
| IVC | Inlet Valve Closing |
| IVGV | Inlet Variable Guide Valve |
| I-VTEC | Intelligent Variable Valve Timing and Lift Electronic Control |
| JAB | Journal of Applied Biomechanics |
| JACM | Journal of Applied and Computational Mechanics |
| JAFM | Journal of Applied Fluid Mechanics |
| JF | Jacking Force |
| JGM | Journal of Geometric Mechanics |
| JTAM | Journal of Theoretical and Applied Mechanics |
| KBP | Kilo-Base Pair |
| KME | Keep Mechanics Employed |
| KME | Keeps Mechanics Employed |
| LATHE | Longitudinal Access Turning Horizontal Equipment |
| LBV | Line Break Valve |
| LDST | Large Diameter Steel Tower |