| Acronym | Meaning |
| PLCC | Plastic Leaded Chip Carrier (electronics) |
| UMBC | University Of Maryland Baltimore County |
| JN | Jan Mayen Island (FIPS 10-4 Territory Code) |
| SKM | Sikkim (ISO 3166 Trigram; Obsolete 1975) |
| AFOSR | U.S. Air Force Office Of Scientific Research |
| VDMOS | Vertical Double-diffused MOS Transistor (vee-dee-moss) |
| BDO | Battle Dress Overgarment |
| OW | Old Wykehamist |
| NICAP | National Investigations Committee On Aerial Phenomena |
| TCD | Chad (ISO 3166 Trigram) |