from The American Heritage® Dictionary of the English Language, 5th Edition.

  • noun 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 The Century Dictionary.

  • noun 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 the GNU version of the Collaborative International Dictionary of English.

  • noun (Physiol. Chem.) 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 Wiktionary, Creative Commons Attribution/Share-Alike License.

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

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

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


Sorry, no etymologies found.



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