| Meaning | Category |
| ECN Notify Acknowledgment | Computing->Networking |
| Ejército Nacional Anticomunista | International->Spanish |
| Enable | Governmental->NASA |
| Eritrean National Alliance | Governmental->Politics |
| Escuela Nacional de Aeronáutica | International->Spanish |
| Escuela Nacional de Agricultura | International->Spanish |
| Ethernet Network Analysis | Computing->Networking |
| Extractable Nuclear Antigen | Medical->Human Genome |
| Kenai, Alaska USA | Regional->Airport Codes |
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