hemin Hemimyaria • hemina · · · Info · Definitions · Synonyms · Characters · · hemin · · Text Latin · · Script 5 · · Length Definitions · · · (noun) a reddish-brown chloride of heme; produced from hemoglobin in laboratory tests for the presence of blood. Synonyms: protohemin. · · Noun Definition 1 Synonyms · · · protohemin · · Synonym 1 Characters · · e latin small letter e U+0065 h latin small letter h U+0068 i latin small letter i U+0069 m latin small letter m U+006D n latin small letter n U+006E