Electronic Data Systems 
Earth Departure Stage 
Emergency Detection System 
Energy Dispersive Spectroscopy 
enter day stop 
Electrical Distribution System 
Energy Dispersive Spectrometry 
Environmental Data Service 
Education Specialist 
Electronic Data System 
Electronic Display System 
Energy Dispersive Spectrometer 
energy-dispersive spectroscopy 
Experiment Data System 
Edit and Decommutation System 
Educational Development Specialist 
Egg drop syndrome 
Electrical Distribution Subsystem 
Electronic Delivery System 
Electronic Design Services 
Embedded Design Suite 
Emergency Deorbit System 
Employee Development Specialist 
Energy Data System 
Engineering Design System 
Enhancement Discrepancy System 
European Desalination Society 
excessive daytime sleepiness 
Exchangeable Disk Storage 
Explosive Device System