| Acronym | Definition |
|---|
| PDEC➣Passive Downdraught Evaporative Cooling |
| PDEC➣Personal Data Ecosystem Consortium |
| PDEC➣Pittsburgh Darfur Emergency Coalition (Pittsburgh, PA) |
| PDEC➣Program Development and Evaluation Center (est. 1972; University of Florida; Gainesville, FL) |
| PDEC➣Poorly Differentiated Endocrine Carcinoma (tumor) |
| PDEC➣Partial Decorrelator |
| PDEC➣Professional Diploma in Electronic Commerce |