English abbreviations from er to erb
- ER (Emergency room)
- ER(D) (Extended Reach (Drilling))
- ER/ED (Emergency room/emergency department)
- ER0S (Eliminate Range Zero Situation (spelled with either letter 'O' or digit Zero))
- ERA (explosive reactive armour)
- ERAC (Electric Armaments Research Center)
- ERAP (Emergency Response Action Plans)
- ERAU (Embry Riddle Aeronautical University)
- ERB (Pukatja Airport (Ernabella Airport))
