| Acronym | Meaning |
 | Z | Zetta |
| LISA | Laser Interferometer Space Antenna |
| CU | Cuba (FIPS 10-4 Country Code; ISO 3166 Digram) |
| PVR | Personal Video Recorder |
| HEIC | Honourable East India Company |
| C2 OR C? | Command And Control |
| TRAP | Tactical Receive Equipment And Related Applications |
| WVR | Women's Volunteer Reserve (WWII UK) |
| J2SE | Java 2 Platform |
| QU | Quechua Language (ISO 639-1 Code) |
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