The Free On-line Dictionary of Computing (30 December 2018):

Electrostatic Discharge
ESD

    (ESD) One kind of test that hardware
   usually has to pass to prove it is suitable for sale and use.
   The hardware must still work after is has been subjected to
   some level of electrostatic discharge.  Some organisations
   have their own ESD requirements which hardware must meet
   before it will be considered for purchase.

   Different countries have different legal regulations about
   levels of ESD.

   See also Radio Frequency Interference, Electromagnetic
   Compatibility.

   (1997-12-19)