Eastern Standard Time 
estimate 
Emergency Support Team 
expressed sequence tag 
Energy Saving Trust 
Estimated 
electroshock therapy 
Establish 
Estimation 
ESTONIA 
Electronic Spark Timing 
emergency service team 
ESTATE 
Earliest Start Time 
Eastern Summer Time 
Ehrlich solid tumor 
elastance 
Elastic-Solid Theory 
electoconvulsive shock therapy 
electric shock treatment 
electrical stimulation therapy 
Electrolytic Sewage Treatment 
Electronic Science and Technology 
Electronic Support Training 
electroshock seizure threshold 
electroshock treatment 
Electrostatic Storage Tube 
Elementary Scattering Theory 
Embedded Systems Tools 
embryonic stem cell test