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