divergence

(dĭ-vûrˈjəns, dī-)

1. a. The act of diverging.
   b. The state of being divergent.
   c. The degree by which things diverge.
2. Physiology A turning of both eyes outward from a common point or of one eye when the other is fixed.
3. Departure from a norm; deviation.
4. Difference, as of opinion. See Synonyms at deviation, difference.
5. Biology The evolutionary tendency or process by which animals or plants that are descended from a common ancestor evolve into different forms when living under different conditions.
6. Mathematics The property or manner of diverging; failure to approach a limit.
7. A meteorological condition characterized by the uniform expansion in volume of a mass of air over a region, usually accompanied by fair dry weather.