WordNet (r) 3.0 (2006):

GSR
    n 1: a change in the electrical properties of the skin in
         response to stress or anxiety; can be measured either by
         recording the electrical resistance of the skin or by
         recording weak currents generated by the body [syn:
         galvanic skin response, GSR, psychogalvanic response,
         electrodermal response, electrical skin response, Fere
         phenomenon, Tarchanoff phenomenon]

V.E.R.A. -- Virtual Entity of Relevant Acronyms (February 2016):

GSR
       Grid Service Reference (OGSI, grid)