| Acronym | Meaning |
| SIYSS | Stockholm International Youth Science Seminar |
| CHU | Old Church Slavonic Language (ISO 639-2 Code) |
| LCM | Least/Lowest Common Multiple |
| FSA | Fire Support Area - UK Food Standards Agency - Functional Solution Analysis |
| FQDN | Fully Qualified Domain Name |
| WIMP | Weakly Interacting Massive Particle - Windows |
| NGA | National Geospatial-Intelligence Agency -Nigeria (ISO 3166 Trigram) |
| TSN | Tswana Language (ISO 639-2 Code) |
| B?C | Blue ?yster Cult |
| ZAMS | Zero Age Main Sequence |