| PEFV | partial expiratory flow volume |
|---|---|
| PEV | peak expiratory velocity |
| REL | rate of energy loss; recommended exposure limit; resting expiratory level |
| TE | echo-time; expiratory time; tennis elbow; test ear; tetanus; tetracycline; threshold energy; thrombo... |
| TE | exhalation time; expiratory phase time |