| Acronym | Meaning |
 | DINK | Double Income |
| CIWS | Close-In Weapon System |
| CORG | (U.S.) Combat Operations Research Group |
| DNA | U.S. Defense Nuclear Agency - DeoxyriboNucleic Acid - Douglas No?l Adams |
| GCS | Global Coordinate System |
| LC2IEDM OR LC?IEDM | Land C2IEDM (q.v.) |
| SIYSS | Stockholm International Youth Science Seminar |
| EEG | ElectroEncephaloGram |
| TP | East Timor (ISO 3166 Digram; Obsolete 2002) - S?o Tom? And Prncipe (FIPS 10-4 Country Code) -Training Practice |
| UU | Unitarian Universalism - University Of Utah - Unseen University |
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