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

  • n. Greek Mythology The rarefied fluid said to run in the veins of the gods.
  • n. Pathology A watery, acrid discharge from a wound or ulcer.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. the liquid that in Greek mythology was said to flow in place of blood in the veins of the gods
  • n. any bloodlike fluid
  • n. a watery, fetid discharge from a sore
  • n. yellow bile

from the GNU version of the Collaborative International Dictionary of English

  • n. An ethereal fluid that supplied the place of blood in the veins of the gods.
  • n. A thin, acrid, watery discharge from an ulcer, wound, etc.

from The Century Dictionary and Cyclopedia

  • n. In Greek and Roman mythology, an ethereal fluid believed to supply the place of blood in the veins of the gods.
  • n. A thin, watery humor, like serum or whey; a thin, watery, acrid discharge from an ulcer, a wound, etc.

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

  • n. a fluid product of inflammation
  • n. (Greek mythology) the rarified fluid said to flow in the veins of the Gods


Middle English icor, from Late Latin īchōr, from Greek īkhōr.
(American Heritage® Dictionary of the English Language, Fourth Edition)
Mid-17th century, from Ancient Greek ἰχώρ. (Wiktionary)



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  • My guess is that ichor is an unlikely source for icky. The Wordnik entry for icky borrows a suggestion of an origin in jazz lingo. I think it sounds like generic baby-talk. Compare yucky and gooey.

    July 5, 2015

  • Might this be the source for the word "icky", with a corrupted spelling?

    July 5, 2015

  • This word was used a lot in "The Dragonriders Of Pern" series of books.

    June 15, 2012

  • likeflannel, you made me smile. :)

    October 30, 2009

  • Copper web.

    October 30, 2009

  • what giant spiders secrete. can be sold for copper.

    October 30, 2009

  • 4077 MASH was a unit within the purview of I Corps

    June 22, 2008