| Acronym | Meaning |
| LW | Lawrencium (obsolete 1963) |
| SCAP | Supreme Commander Allied Powers (Allied Occupation Of Japan) |
| DEFRA | (UK) Department For Environment |
| SU | Soviet Union (ISO 3166 Digram; Obsolete 1992) - Sudan (FIPS 10-4 Country Code) |
| WTH | What The Hell |
| MN | Manganese |
| AW | Aruba (ISO 3166 Digram) |
| AFL | CIO -American Federation Of Labor - Congress Of Industrial Organizations |
| DM | Dominica (ISO 3166 Digram) -Dungeon Master (role-playing Games) |
| CTGF | Connective Tissue Growth Factor |