hemogenesis he·mo·ge·nesis uncommon noun 1. the formation of blood cells in the living body (especially in the bone marrow) Synonymshematopoiesishaematopoiesishemopoiesishaemopoiesishaemogenesishematogenesishaematogenesissanguification Related words Broader terms organic process WordNet 2.1 (Princeton University). WordNet 2.1 Copyright Princeton University. All rights reserved.