Definitions of coherence

• Meyers Online-Lexikon:
  Kohärenz, das Vorhandensein genau bestimmter Beziehungen zw. den Phasen sich überlagernder (interferierender) Wellenzüge; v. a. Laser liefern eine Strahlung bes. hoher Kohärenz.
• From Webster's Revised Unabridged Dictionary (1913)
  Coherence, Coherency, n. [L. cohaerentia: cf. F. coh['e]rence.]

  1. A sticking or cleaving together; union of parts of the same body; cohesion.

  2. Connection or dependence, proceeding from the subordination of the parts of a thing to one principle or purpose, as in the parts of a discourse, or of a system of philosophy; consecutiveness.

  Coherence of discourse, and a direct tendency of all the parts of it to the argument in hand, are most eminently to be found in him. -Locke.

• From WordNet (r) 1.6
  coherency, n.

  1: the state of cohering [syn: coherence, cohesion, cohesiveness] [ant: incoherence]

  2: logical and orderly and consistent relation of parts [syn: coherence]

• "Meister"-Definition:
  Coherence denotes similarities between items or entities