| Acronym | Meaning |
| LTI | Linear Time-Invariant |
| DCCP | Datagram Congestion Control Protocol |
| MPMC | Medial PreMotor Cortex |
| PLF | Parachute Landing Fall |
| JREF | James Randi Educational Foundation |
| JP | Japan (ISO 3166 Digram) -Justice Of The Peace |
| NP | Neap Tide (nautical Charts) -Neptunium |
| JVM | Java Virtual Machine |
| GR | Greece (FIPS 10-4 Country Code; ISO 3166 Digram) - Hail (METAR Code) |
| ORM | Oromo Language (ISO 639-2 Code) |