/ Dictionary / Index H hemin: Meaning and Definition of Find definitions for: he•min Pronunciation: (hē'min), [key] — n. Biochem. the typical, microscopic reddish-brown crystals, CHNOFeCl, 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. Also called Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: hemin (Thesaurus) hemimorphite Hemingway Related Content Daily Word Quiz: spectral Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language