| Acronym | Meaning |
| RSPCA | Royal Society For The Prevention Of Cruelty To Animals |
| CHU | Old Church Slavonic Language (ISO 639-2 Code) |
| DR | Dead Reckoning -Dominican Republic (FIPS 10-4 Country Code) -Danmarks Radio (Danish Broadcasting Corporation) |
| CHI | Computer-Human Interaction |
| HEO | Highly Elliptical Orbit |
| VDMOS | Vertical Double-diffused MOS Transistor (vee-dee-moss) |
| TADSS | Training Aids |
| EGBUS | External Genitalia |
| CASTFOREM | Combined Arms And Support Task FORce Evaluation Model |
| CTIL | Critical Tracked Items List |