| Rank | Abbreviation | Meaning |
|---|
| ***** | PSEC | Professional Staff Executive Committee
| |
| ***** | PSEC | Picosecond
| |
| **** | PSEC | Prospect Capital Corp (NASDAQ Stock Exchange [NASDAQ])
| |
| **** | PSEC | Post Secondary Employers' Council
| |
| **** | PSEC | Post Secondary Education Council
| |
| *** | PSEC | Please See Embedded Comments
| |
| *** | PSEC | Pressure Switch End Cap
| |
| *** | PSEC | Philippines Securities and Exchange Commission
| |
| *** | PSEC | Process Systems Engineering Consortium
| |
| *** | PSEC | Photovoltaic Solar Energy Conference
| |
| ** | PSEC | Professional Standards and Education Committee
| |
| ** | PSEC | Power System Education Committee
| |
| ** | PSEC | Public Services Executive Committee
| |
| ** | PSEC | Pesticide Safety Education Center
| |
| * | PSEC | Power System Engineering Course
| |
| * | PSEC | Power Systems Energy Consulting
| |
| * | PSEC | Provincial Student Education Council
| |
| * | PSEC | Plastic Surgery Education Campaign
| |
| * | PSEC | Polish Securities and Exchange Commission
| |
| * | PSEC | Pastel Society of Eastern Canada
| |
| * | PSEC | Protective Services Employees Coalition
| |
| * | PSEC | Public Safety Educators Coalition
| |
| * | PSEC | post-stimulus masseteric EMG complex
| |
| * | PSEC | Perez Special Ed Center
| |
| * | PSEC | Puget Sound Engineering Council
| |