VAr

noun

A unit of electrical power, in an AC circuit, equal to the power dissipated when 1 volt produces a current of 1 ampere.

1. Something that is variable.
2. Something whose value may be dictated or discovered.

   There are several variables to consider here.

3. A quantity that may assume any one of a set of values.
4. A symbol representing a variable.
5. A named memory location in which a program can store intermediate results and from which it can read them.
6. A variable star.
7. A shifting wind, or one that varies in force.
8. (in the plural) Those parts of the sea where a steady wind is not expected, especially the parts between the trade-wind belts.

1. The act of varying or the state of being variable.
2. A difference between what is expected and what is observed; deviation.
3. The state of differing or being in conflict.
4. An official permit to do something that is ordinarily forbidden by regulations.
5. A discrepancy between two legal documents.
6. A departure from a cause of action originally in a complaint.
7. The second central moment in probability.
8. The number of degrees of freedom in a system.
9. 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.