| Acronym | Definition |
|---|
| NPDI➣Non-Proliferation and Disarmament Initiative (Nuclear Non-Proliferation Treaty) |
| NPDI➣New Product Development and Introduction (core business process) |
| NPDI➣Non-Performance of Duty Because Imprisoned (US Navy) |
| NPDI➣Number Portability Dip Indicator |
| NPDI➣No Payment, Deferred Interest (financing) |
| NPDI➣Net Private Domestic Investment |
| NPDI➣New Product Development Initiative (Oracle) |
| NPDI➣Norfolk Power Distribution, Inc. (Canada) |