hemin

[ hee-min ]

Phonetic (Standard)IPA

noun

, Biochemistry.

the typical, microscopic reddish-brown crystals, C 34 H 32 N 4 O 4 FeCl, 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.

Origin of hemin¹

First recorded in 1950–55; hem- + -in ²

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

It wuz known that Miss Widrig wouldn't begin a mite of work Fridays, not even hemin' a towel or settin' up a sock or mitten.

April 18, 2024petrichor

[pet-ri-kawr]

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