| EBU | Ego Boost Units - Med Students/junior Doctors That Follow A Doctor | - | NASA |
| EC | Eternal Care - Intensive Care (for A Patient Who Won't Come Out Again) | - | NASA |
| ECU | Eternal Care Unit: Heaven ("gone To The ECU" = Dead) | - | NASA |
| EDDU | Eating Drinking Defecating Urinating (but Not Much Else) | - | NASA |
| EDGATWTTTF | Elevator Doesn't Go All The Way To The Top Floor (questionable IQ) | - | NASA |
| EI | Eating In - Intravenous Feeding | - | NASA |
| ELFS | Evil Little F*ckers (irritating Children) | - | NASA |
| EMS | Earn Money Sleeping (joke At Expense Of Emergency Medical Service) | - | NASA |
| EMT | Extraordinary Masochistic Tendencies (joke At Expense Of Emergency Medical Technicians) | - | NASA |
| ERCP | Emergency Retrograde Clerking Of Patient, An Emergency Procedure Before The Consultant Rounds | - | NASA |
| ERNOBW | Engine Running, No One Behind The Wheel (questionable IQ) | - | NASA |
| ES | Eiffel Syndrome - From "I Fell On It" Excuse By Patient With A Foreign Object In The Rectum | - | NASA |
| ESBAM | Eat Shit And Bark At The Moon (or "not Bloody Likely" In UK English) | - | NASA |
| ETOH | Extremely Trashed Or Hammered (2 Derivations Given: Corruption Of "Etho" [ethanol Addict] Or From "EtOH" [chemistry Abbreviation For Ethanol]) | - | NASA |
