Origin of hemo-Classical Greek haimo- from haima, flowing blood (replacing earlier ear, blood, probably for reasons of taboo); probably akin to Old High German seim, thick-flowing honey from Indo-European base an unverified form sei-, an unverified form soi-, to drip
Hemo is defined as relating to blood.
An example of hemo used as a prefix is in the word hemoglobin.
or hema- or hem- also haemo- or haema- or haem-
Origin of hemo-Greek haimo- from haima