Designating electric charge on an object that is balanced by an equal and opposite charge, and so is not apparent (now historical); (also)…

Of or relating to stationary electric charges, as opposed to electric currents; designating an unvarying electric field, such as a stationary charge…

= 1.

Applied to electrostatic instruments in which there is electrification independent of that to be tested.

Static electricity. Frequently attributive.