hemal Syllabification: (he·mal)Pronunciation: /ˈhēməl/ (British haemal)Definition of hemal adjective Physiology of or concerning the blood. Zoology situated on the same side of the body as the heart and major blood vessels (i.e., in chordates, ventral). Origin: mid 19th century: from Greek haima 'blood' + -alhemal in other Oxford dictionaries Definition of hemal in the British & World English dictionary