| Acronym | Meaning |
| PLM | Polarized Light Microscope/Microscopy |
| YS | Yoctosiemens |
| TCAA | Top Counter-Assault Agents |
| KO | Knocked Out |
| IRO | International Refugee Organisation |
| PF | Picofarad |
| JEFX | Joint Expeditionary Force EXperiment |
| YN | Yottanewton |
| SG | Senegal (FIPS 10-4 Country Code) - Singapore (ISO 3166 Digram) - Snow Grains (METAR Code) -Study Group |
| ESL | English As A Second Language |