co ‧ her ‧ ence AC /kəʊˈhɪərəns $ koʊˈhɪr-/ BrE AmE ( also co‧her‧en‧cy /-rənsi/) noun [uncountable]
[ Word Family: verb : ↑ cohere ; noun : ↑ coherence ≠ ↑ incoherence ; adverb : ↑ coherently ≠ ↑ incoherently ; adjective : ↑ coherent ≠ ↑ incoherent ]
1 . when something such as a piece of writing is easy to understand because its parts are connected in a clear and reasonable way:
An overall theme will help to give your essay coherence.
He had a coherence of outlook and thought.
2 . if a group has coherence, its members are connected or united because they share common aims, qualities, or beliefs:
A common religion ensures the coherence of the tribe.