| Acronym | Definition |
|---|
| PECI➣Portland Energy Conservation, Inc. (Portland, Oregon) |
| PECI➣Platform Environment Control Interface |
| PECI➣Productivity Enhancing Capital Investment |
| PECI➣Productivity Enhancement Capital Investment |
| PECI➣Product Exceeds Customer's Intelligence |
| PECI➣Preliminary Equipment/Electronic Component Index |
| PECI➣Perry Correctional Institution (South Carolina Department of Corrections) |