| Acronym | Meaning |
 | HIRISE | High Resolution Imaging Science Experiment |
| SPQR | Senatus Populus Que Romanus (Latin The Senate And The People Of Rome) |
| ITT | International Telephone And Telegraph (U.S.) |
| WWJD | What Would Jesus Do? (see WWWD) |
| HORECA | Hotel |
| CCRAP | Canadian Conservative Reform Alliance Party |
| UESAC | Uppsala-ESO Survey Of Asteroids And Comets |
| MOZ | Mozambique (ISO 3166 Trigram) |
| IDO | Ido Language (ISO 639-2 Code) |
| TED | Technology Entertainment Design Prize |
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