Pronunciation: (kō-hēr'uns, -her'-),[key] —n. 1. the act or state of cohering; cohesion.
2. logical interconnection; overall sense or understandability.
3. congruity; consistency.
4. Physics,Optics.(of waves) the state of being coherent.
5. Ling.the property of unity in a written text or a segment of spoken discourse that stems from the links among its underlying ideas and from the logical organization and development of its thematic content. Cf. cohesion (def. 4). Also,co•her'en•cy.