| Acronym | Meaning |
| ROU | Romania (ISO 3166 Trigram) |
| NAAQS | National Ambient Air Quality Standards |
| BCS | Bardeen |
| USC | United States Code - University Of South Carolina - University Of Southern California |
| IFC | International Finance Corporation (part Of The World Bank) -Independent Film Channel |
| IANA | Internet Assigned Numbers Authority |
| ISSCR | International Society For Stem Cell Research |
| CN | Canadian National (railway) -China (ISO 3166 Digram) - Comoros (FIPS 10-4 Country Code) |
| DTIC | (U.S.) Defense Technical Information Center |
| TBA | To Be Announced |