[ hee-min ]
/ ˈhi mɪn /

noun Biochemistry.

the typical, microscopic reddish-brown crystals, C34H32N4O4FeCl, resulting when a sodium chloride crystal, a drop of glacial acetic acid, and some blood are heated on a slide: used to indicate the presence of blood.

Nearby words

  1. hemilaryngectomy,
  2. hemilateral,
  3. hemimetabolism,
  4. hemimorphic,
  5. hemimorphite,
  6. hemings, sally,
  7. hemingway,
  8. hemingway, ernest,
  9. hemingwayesque,
  10. hemiola

Origin of hemin

First recorded in 1950–55; hem- + -in2

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for hemin

  • When cool, replace the acid with water, and examine for hemin crystals with two-thirds and one-sixth objectives.

    A Manual of Clinical Diagnosis|James Campbell Todd

Medicine definitions for hemin


[ hēmĭn ]


The reddish-brown crystalline chloride of heme produced when hemoglobin reacts with certain reagents in a test for the presence of blood.hematin chloride

The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.