electrostatic(a = adj.pert) static - concerned with or producing or caused by static electricity; "an electrostatic generator produces high-voltage static electricity"
Derived form noun electrostatics₁

   Pertaining to electrostatics. [1913 Webster]

electrostatic, adj. of electricity at rest.

Idiom:
electrostatic units a system of units based primarily on the forces between electric charges.

Etymology:
ELECTRO- + STATIC after hydrostatic

electrostatic bond, electrostatic charge, electrostatic field, electrostatic generator, electrostatic machine, electrostatic printer, electrostatic unit