Economic Commission for Africa 
Electronic Control Assembly 
Electronics Control Assembly 
External Certificate Authority 
Earth Crossing Asteroid 
Educational and Cultural Affairs 
Expanded Chaff Adapter 
Electrically Conductive Adhesive 
European Combat Aircraft 
Exchange Carrier Association 
External Certification Authority 
Early Comparability Analysis 
Ecological Society of America 
Economic Community for Africa 
Economic Cooperation Administration 
Electrical Contractors Association 
Electronic Components Association 
Engineering Change Analysis 
Epoxy Curing Agent 
equivalent core approximation 
Erythrina cristagalli agglutinin 
Europe and Central Asia 
European Confederation of Agriculture 
Bureau of Educational and Cultural Aff… 
Eagle Chess Academy 
Earth Central Angle 
Earth-crossing asteroids 
Eastern and Central Africa 
ecarin chromogenic assay 
Echocontrast agents