| Acronym | Meaning |
 | NRTA | National Thoroughbred Racing Association - National Rat Terrier Association - National Retail Tenants Association - National Retired Teachers Association - Northwest Regional Transmission Association |
| KAL | Kalaallisut Language (ISO 639-2 Code) |
| UUB | Ununbium (temporary Superheavy Chemical Element Name) |
| JH | Japan Highway Public Corporation |
| SZ | Swaziland (ISO 3166 Digram) - Switzerland (FIPS 10-4 Country Code) |
| CREB | Cyclic AMP-response Element Binding (protein) |
| MR | Marathi Language (ISO 639-1 Code) |
| PAPI | Precision Approach Path Indicator (aviation) |
| FSI | Fuel Stratified Injection |
| PIG | Pipeline Inspection Gauge |
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