ferratin
/ˈfɛrətɪn/Biochemistry. Now historical
noun
An iron-containing substance obtained from liver tissue, probably a mixture of ferritin and other proteins.
Origin
Late 19th century. From classical Latin ferrātus bound or covered with iron, clad in armour, armoured, (of water) impregnated with iron (from ferrum iron + -ātus) + -in.