ˌbenzpə̇ˈrinēəm noun
( -s )
Etymology: benz- + pyr id inium
: the substituted pyridinium ion [C 6 H 5 CH 2 NC 5 H 4 OOCN(CH 3 ) 2 ] + derived by benzylation of dimethyl-carbamoyl-oxy-pyridinium ; also : a salt containing this radical (as the bromide used to relieve postoperative urinary retention)