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

  • n. A picture or photograph made up of shadows or outlines.
  • n. See radiograph.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. A picture or image created from shadows, especially with X-rays.

from The Century Dictionary and Cyclopedia

  • n. Same as sciagram.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • n. a photographic image produced on a radiosensitive surface by radiation other than visible light (especially by X-rays or gamma rays)


Greek skiā, shadow + -gram.
(American Heritage® Dictionary of the English Language, Fourth Edition)



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