a reddish brown substance produced in a laboratory test for the presence of blood by reaction with glacial acetic acid and sodium chloride
A substance, in the form of reddish brown, microscopic, prismatic crystals, formed from dried blood by the action of strong acetic acid and common salt; called also Teichmann's crystals
{i} microscopic crystals which appear when a mixture of chemicals and blood are heated (Biochemistry)
a reddish-brown chloride of heme; produced from hemoglobin in laboratory tests for the presence of blood