| Acronym | Meaning |
 | IN | India (FIPS 10-4 Country Code; ISO 3166 Digram) - Indiana (postal Symbol) - Infantry |
| NCR | National Cash Register Co. |
| RDTE OR RDT&E | Research |
| DY | Dysprosium |
| JTRS | Joint Tactical Radio System (jitters) |
| TJS | Tajik Somoni (ISO 4217 Currency Code) |
| HEU | Highly Enriched Uranium |
| HY | Armenian Language (ISO 639-1 Code) |
| AIDS | Acquired Immune Deficiency Syndrome |
| LED | Light-Emitting Diode |
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