EI

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EI or Ei may refer to:

Media[edit]

Organizations[edit]

Places[edit]

Science[edit]

  • Ei, an abbreviation for the binary prefix exbi
  • Engineering Index, an article index for engineering journals
  • Earth Interactions, a scientific journal published by the American Meteorological Society, American Geophysical Union, and Association of American Geographers
  • Electron ionization, an ionization method in which energetic electrons interact with gas phase atoms or molecules to produce ions
  • Electronic ignition, a variety of modern ignition system
  • Engineer intern, an intermediary step to becoming a Professional Engineer

Other[edit]