/koh hear"euhns, -her"-/ , 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, coherency .
[ 1570-80; COHER(ENT) + -ENCE ]
Syn. 3. correspondence, harmony, agreement, rationality.