Meaning

• The act of varying or the state of being variable.

• A difference between what is expected and what is observed; deviation.

• The state of differing or being in conflict.

• An official permit to do something that is ordinarily forbidden by regulations.

• A discrepancy between two legal documents.

• A departure from a cause of action originally in a complaint.

• The second central moment in probability.

• The number of degrees of freedom in a system.

• Covariance and contravariance generally.

  "Depending on the variance of the type constructor, the subtyping relation of the simple types may be either preserved, reversed, or ignored for the respective complex types."