| Acronym | Meaning |
![](file.png) | EO | Electro-Optics - Engagement Operations |
![](file.png) | EO | Esperanto Language (ISO 639-1 Code) |
![](file.png) | EOD | Explosive Ordnance Disposal |
![](file.png) | EOG | ElectroOculoGraphy |
![](file.png) | EOM | End Of Message |
![](file.png) | EOS | Earth Observation Satellite |
![](file.png) | EOSAT | Earth Observation Satellite |
![](file.png) | EOSDIS | Earth Observation Satellite Data And Information System |
![](file.png) | EOTS | Electro-Optical Tactical Sensor |
![](file.png) | EP | Electronic Protection |
![](file.png) | EPA | EicosaPentaenoic Acid -Environmental Protection Agency |
![](file.png) | EPCOT | Experimental Prototype Community Of Tomorrow |
![](file.png) | EPGS | EOS Polar Ground Sites |
![](file.png) | EPIRB | Emergency Position Indicating Radio Beacon |
![](file.png) | EPL | English Premier League |
![](file.png) | EPLRS | Enhanced Position Location Reporting System (ee-plarz) |
![](file.png) | EPO | Erythropoietin |
![](file.png) | EPO | Esperanto Language (ISO 639-2 Code) |
![](file.png) | EPR | European Pressurised [Nuclear] Reactor |
![](file.png) | EPW | Earth Penetrator Weapon/Warhead - Economic And Political Weekly (Indian Publication) - Enemy Prisoner Of War |
![](file.png) | ER | Emergency Room -Eritrea (ISO 3166 Digram; FIPS 10-4 Country Code) |
![](file.png) | ER | Erbium |
![](file.png) | ERA | Earned Run Average - Engineering Research Associates - Equal Rights Amendment - English Racing Automobiles - European Railway Agency |
![](file.png) | ERCIM | European Research Consortium For Informatics And Mathematics |
![](file.png) | ERI | Eritrea (ISO 3166 Trigram) |
![](file.png) | ERN | Eritrean Nakfa (ISO 4217 Currency Code) |
![](file.png) | EROS | Earth Resources Observation System |
![](file.png) | ERP | Engineer Regulating Point |
![](file.png) | ERS | Earth Resources Survey |
![](file.png) | ERTS | Earth Resources Technology Satellite (became Landsat) |
![](file.png) | ERV | Endogenous RetroVirus |
![](file.png) | ES | Einsteinium - Exasecond |
![](file.png) | ES | El Salvador (FIPS 10-4 Country Code) -Electronic Warfare Support -Exasiemens - Spain (ISO 3166 Digram; From Espa?a)) |
![](file.png) | ES | Spanish Language (ISO 639-1 Code) |
![](file.png) | ESA | Electro-Spark Alloying - Endangered Species Act - European Space Agency |
![](file.png) | ESC | Embryonic Stem Cell |
![](file.png) | ESD | ElectroStatic Discharge |
![](file.png) | ESDP | European Security And Defence Policy |
![](file.png) | ESE | East South-East |
![](file.png) | ESH | Western Sahara (ISO 3166 Trigram) |
![](file.png) | ESL | English As A Second Language |
![](file.png) | ESM | Electronic Warfare Support Measures |
![](file.png) | ESO | European Southern Observatory |
![](file.png) | ESOL | English For Speakers Of Other Languages |
![](file.png) | ESP | Electronic Stability Program - Extra-sensory Perception -Spain (ISO 3166 Trigram) |
![](file.png) | ESPN | Entertainment And Sports Programming Network |
![](file.png) | EST | Eastern Standard Time (UTC-5 Hours) -Estonia (ISO 3166 Trigram) |
![](file.png) | EST | Estonian Language (ISO 639-2 Code) |
![](file.png) | ESU | Emergency Services Unit |
![](file.png) | ESV | Engineer Support Vehicle |