| Acronym | Meaning |
| EAG | Exposure Assessment Group |
| EAGLE | European Association For Grey Literature Exploitation |
| EAL-MCDF | Extended Average Level-(relativistic) Multiconfiguration Dirac-Fock |
| EAM | Energy Absorbing Molecules |
| EAM | Electron Acoustic Microscopy |
| EAM | Embedded Atom Method |
| EAN | Effective Atomic Number |
| EAP | Electroactive Polymer |
| EAP | Emission Assessment Program |
| EAP | Environmental Action Plan |
| EAPFS | Extended Appearance-potential Fine-structure Spectroscopy |
| EAR | European Asthenospheric Reservoir (mantle Source For Tertiary-Quaternary Volcanism) |
| EARISS | Energy And Angle Resolved Ion Scattering Spectroscopy |
| EAROM | Electrically Alterable Read Only Memory |
| EARTOF | Energy And Angle Refocusing Time-of-flight Mass Spectrometry |
| EAS | Extensive Air Shower |
| EAS | Exposure Assessments |
| EASC | Extended Anaerobic Sludge Contact |
| EASE | Electronic Absorption Spectroscopy Experiments |
| EASOE | European Arctic Stratospheric Ozone Expt. |
| EASTT | Environmental Advisory Service For Technology Transfer |
| EAZO | Energetically Active Zones Of The Ocean |
| EB | Ethyl Benzene |
| EB | Extended Basis (set) |
| EBA | Eikonal Born Approxn. |
| EBA | Expanded Bed Adsorption |
| EBA | Exponentiated Born Approximation |
| EBAM | Electron-beam-addressable Memories |
| EBB | Electronic Bulletin Board |
| EBC | Eastern Boundary Current |
| EBCT | Electron Beam Computed Tomography |
| EBCT | Empty Bed Contact Time |
| EBD | Electron Beam Doping |
| EBD | Equilibrium Brownian Dynamics |
| EBDC | Ethylenebis(dithiocarbamate) (fungicide) |
| EBEBO | Extended Bond Energy Bond Order (quantum Calcn. Method) |
| EBER | Electron Beam Electroreflectance |
| EBFRIP | European Brominated Flame Retardant Industry Panel |
| EBHT | Electron Beam Hardening Treatment |
| EBI | European Bioinformatics Institute |
| EBI | Equivalent Background Illumination |
| EBIC | Electron Beam Induced Current |
| EBIR | Energy Based Integral Retention (in Electronic-structure Calcns.) |
| EBIS | Electron-beam Ion Source |
| EBIT | Electron Beam Ion Trap |
| EBK | Einstein-Brillouin-Keller (quantization Method) |
| EBL | Electron-beam Lithography |
| EBL | Extragalactic Background Light |
| EBM | Electron Beam Machining |
| EBM | Electron Beam Melting |