IPA: /ˈhɛm.ə.tɪn/
KK: /ˈhɛmətɪn/
A dark compound formed from the breakdown of hemoglobin, containing iron and nitrogen, often found in blood.
Hematin is used in various biochemical studies to understand blood composition.
Hematin is derived from "heme" (from Greek "haima", meaning blood) and "-tin" (a suffix used in chemistry to denote a substance). The word refers to a compound related to heme, which is a component of hemoglobin found in blood.
Think of 'heme' which relates to 'blood' — that's why 'hematin' is a substance associated with blood.