Acronyms Used in Government Contracting (E)

Master list of the most frequently used government contracting acronyms. These acronyms and abbreviations are routinely used in government solicitations. You will also encounter these acronyms throughout the various sections of government contracts. This master list of acronyms will help you better understand the specialized language of government contracting. This is essential for successfully doing business with the Department of Defense (DoD) and working with contracting offices at military bases and DoD agencies. You can also use our Glossary of defense contracting terms.


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View GLOSSARY of Contracting Terms

EA   Economic Analysis 
EAC   Estimate at Completion (Cost)
ECC   Estimated Construction Cost
ECCM   Electronic Counter-Countermeasures
ECD   Estimated Completion Date
EC/EDI   Electronic Commerce / Electronic Data Interchange
ECM   Electronic Countermeasures
ECN   Engineering Change Notice
ECO   Engineering Change Order
ECP   Engineering Change Proposal
EDI   Electronic Data Interchange
EDM   Engineering Development Model
EDP/E   Electronic Data Processing/Equipment
EEIC   Element of Expense Investment Code
EEO   Equal Employment Opportunity
EI   Enterprise Integration
EIT   External Information Technology
EIS   Environmental Impact Statement
ELINT   Electronic Intelligence
EMC   Electromagnetic Compatibility
EMD   Engineering and Manufacturing Development 
EMI   Electromagnetic Interference
EMP   Electromagnetic Pulse
EO   Executive Order
EOA   Early Operational Assessment
EOM   End of Month
EOQ   Economic Order Quantity 
EOY   End of Year
EPA   Economic Price Adjustment
EPA   Environmental Protection Agency
EPR   Economic Production Rate
EPRA   Enterprise Performance Review and Analysis
ESA   Engineering Support Activity
ESOH   Environment, Safety, and Occupational Health
ETP   Enterprise Transition Plan
ETR   Estimated Time to Repair
EVM   Earned Value Management
EVMS   Earned Value Management System
EW   Electronic Warfare 


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Guidance for Doing Business with Military Bases