What is "negatively electrified"

Negatively \Neg"a*tive*ly\, adv.

1. In a negative manner; with or by denial. ``He answered negatively.''
   --Boyle.

2. In the form of speech implying the absence of something; -- opposed to positively.

   I shall show what this image of God in man is, negatively, by showing wherein it does not consist, and positively, by showing wherein it does consist.
   --South.

   Negatively charged or Negatively electrified (Elec.), having a charge of the kind of electricity called negative, as does the electron.