| Acronym | Meaning |
 | BTIS | Battlefield Target Identification System |
| VCDS | (Canada) Vice-Chief Of The Defence Staff |
| CAT | Catalan Language (ISO 639-2 Code) |
| COSER | COoperative SERvice |
| CAAT | OrCampaign Against Arms Trade - The Johns Hopkins Center For Alternatives To Animal Testing |
| ORR | Oak Ridge Reservation (U.S. DOE) - Office Of Rail Regulation (UK Government) - Office Of Refugee Resettlement - (CIA) Office Of Research And Reports - Operational Readiness Rate - Operational Readiness Review |
| FAAQ | Frequently Asked And Anticipated Questions (cf. FAQ) |
| ZN | Zettanewton |
| EOS | Earth Observation Satellite |
| HBR | Human Behaviour Representation |
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