Capacitance

(c)
[1] The property which opposes any change in voltage in an electrical circuit. The property of a nonconductor by which it stores electrical energy when separated surfaces of the nonconductor are maintained at a difference of potential. Capacitance is measured by the ratio of the charge induced to the potential difference and is proportional to the area of the conducting plates and the dielectric constant of the nonconducting material, and inversely proportional to the separation of the plates (mks unit: farad).
[2] Property of a nonconductor (condenser or capacitor) that permits storage of electrical energy in an electrostatic field.
[3] Of an isolated conductor, the ratio of the total charge on it to its potential; C=Q/V.
See also farad, stray capacitance