Enterprise Service Router 
erythrocyte sedimentation rate 
Enhanced Service Request 
Equivalent Series Resistance 
Electron Spin Resonance 
Electronic Service Record 
Electronic Service Request 
Engineering Support Request 
early site review 
Earth Science Research 
electronic spin resonance 
Emergency Sun Reacquisition 
Environmental Sciences Research 
early storage reserve 
Effective Series Resistance 
EFFECTIVE SIGNAL RADIATED 
Electrical Substitution Radiometer 
Eric Steven Raymond 
Errored Seconds Ratio 
European Staff Requirement 
Experimental Superheat Reactor 
e lectron spin resonance 
ear swelling response 
ear-scratch response 
Earth & Space Research 
Earth and Space Research 
earth sheath return 
Edge Sense Register 
Education Sector Reforms 
Education Sector Review