from The American Heritage® Dictionary of the English Language, 4th Edition

  • The symbol for atomic number.
  • The symbol for impedance.
  • abbr. Zulu time

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. The twenty-sixth letter of the basic modern Latin alphabet.
  • n. Symbol for the prefix zetta-
  • n. the impedance of an electrical circuit
  • n. the depth dimension in a 3D environment
  • n. atomic number
  • n. The twenty-sixth letter of the English alphabet, called zed or zee and written in the Latin script.


Sorry, no etymologies found.


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  • You're the first person to list the capitalized versions of these letters. That's cool, Jubjub! I've been looking for a way to list letters so that I can figure out how many Scrabble points they're worth, etc.--I think this will be a good place to start.

    January 2, 2010

  • I know ... looking at the pile of letters I've heaped on Zeitgeist, I'm embarrassed.

    January 2, 2010

  • Wow

    January 2, 2010

  • Girl

    January 2, 2010