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

  • n. The reddish-brown crystalline chloride of heme, C34H32N4O4FeCl, produced when hemoglobin reacts with glacial acetic acid and sodium chloride in a laboratory test for the presence of blood.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. a reddish brown substance produced in a laboratory test for the presence of blood by reaction with glacial acetic acid and sodium chloride

from the GNU version of the Collaborative International Dictionary of English

  • n. A substance, in the form of reddish brown, microscopic, prismatic crystals, formed from dried blood by the action of strong acetic acid and common salt; -- called also Teichmann's crystals. Chemically, it is a hydrochloride of hematin.

from The Century Dictionary and Cyclopedia

  • n. A crystalline substance which may be obtained from hematin on treating it with salt and glacial acetic acid. Its formula is C34H33N4O4FeCl. The crystals are quite characteristic in appearance, and their formation has for many years represented one of the most important tests for blood-coloring matter. See Teichmann's crystals.

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

  • n. a reddish-brown chloride of heme; produced from hemoglobin in laboratory tests for the presence of blood
  • v. surround so as to force to give up
  • v. surround in a restrictive manner


Sorry, no etymologies found.



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