coherency UK /kəʊˈhɪə.ɹən.si/US /koʊˈhɪə.ɹən.si/ noun1 •The state of being coherent; a coherent relationship.even in all things therein created, there must be some image, somewhat resembling, and having coherencie with the workeman that wrought and framed them. — 1603 formscoherencies