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 


Pentagon Spokesman Department of Defense (DoD)

Guidance for Doing Business with Military Bases


The Wait Can Be Long!
Often the waiting list to get into see a Small Business Specialist at a military base can be long... frequently very long. And when your appointment date finally arrives, you might only get a few minutes of consultation. 
Why Not Get the Help You Need Today!
You can download and use our helpful defense contracting guidebooks. They are easy to read and packed with valuable information you will find extremely helpful for doing business with the Department of Defense and with military bases.

Download and Use our Helpful Guidebooks 

 Defense Studies Institute Small Business Specialist 


   Defense Studies Institute Army Corps of Engineers

Defense Studies Institute Marine Corps Defense Studies Institute Government Subcontractor
What Do Military Bases Purchase?
Master list of products, materials, equipment, and services routinely purchased by military bases and DoD organizations. 
Doing Business at Military Bases
Small business opportunities and points of contact at military bases and DoD agencies across the United States.
Subcontracting Opportunities
Detailed step-by-step guidance for becoming a successful subcontractor or supplier to prime defense contractors.