divergence
Pronunciation:
/daɪˈvɜː(ɹ)dʒəns/noun
Definitions
The degree to which two or more things diverge.
Example: An angle is made by the divergence of straight lines.
The operator which maps a function F=(F1, ... Fn) from a n-dimensional vector space to itself to the number \sum_{i=1}^n \frac{\partial F_i}{\partial x_i}
Disagreement; difference
The process in which two or more populations accumulate genetic changes (mutations) through time.