The term RELATING TO BLOOD can be summarized by two crossword solutions: HEMAL and HEMIC. HEMAL is an adjective that refers to something related to blood, such as a hemal arch, which is a structure of bones in the vertebral column. HEMIC is an adjective that refers to something related to the half of the body, such as a hemic system, which is a system of organs in the body that are responsible for the production and circulation of blood.