IPA: /kəʊˈhɪərəns/
KK: /koʊˈhɪərəns/
The quality of being logical and consistent, where different parts fit together well and make sense as a whole.
The coherence of her argument made it easy to understand her point of view.
Coherence is formed from "co-" (meaning together) and "haerere" (meaning to stick or adhere). The word describes the quality of parts sticking together in a logical and consistent manner.
Think of things 'sticking together' ('haerere') in a logical way ('co-') — that's what coherence means.