| Acronym | Meaning |
 | AO | Angola (FIPS 10-4 Country Code; ISO 3166 Digram) -Approach Officer (submarine) - Area Of Operations |
| WWF | World Wildlife Fund - World Wrestling Federation |
| TFR | Total Fertility Rate |
| RX | Receive |
| HIRISE | High Resolution Imaging Science Experiment |
| TNT | TriNitroToluene |
| NIAAA | U.S. National Institute On Alcohol Abuse And Alcoholism |
| HUMINT | Human Intelligence (military Parlance) |
| PUB | Publication |
| TR | Turkish Language (ISO 639-1 Code) |
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