| Acronym | Definition |
|---|
| PEFR➣Peak Expiratory Flow Rate |
| PEFR➣Period-End Financial Reporting |
| PEFR➣Peak Early Filling Rate (cardiology) |
| PEFR➣Port E Function Register |
| PEFR➣Person Eligible for Relief (Maryland) |
| PEFR➣Prolonged Recording Expiratory Flow Rate |
| PEFR➣Pick Expiratory Forced Rate (nervous system research) |