hemin

American  

[hee-min] / ˈhi mɪn /

noun

Biochemistry.

1. 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.

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Etymology

Origin of hemin

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