“+ adjective
Etymology: electr- + positive
1.
a. : charged with positive electricity : having a tendency to pass to the cathode in electrolysis
b. : capable of acting as the negative electrode of a voltaic cell : anodic — used especially in electrical engineering
2.
a. : having a tendency to release electrons especially in an oxidation-reduction reaction : nucleophilic
sodium is a highly electropositive element
b. : capable of acting as the positive electrode of a voltaic cell : cathodic