• The possession or manifestation of two opposite or opposing attributes, magnitudes, or the like. For example, electrical or magnetic polarity. Also, the indication or orientation of a state or condition arising from such polarity, as in positive or negative polarity.
  • The property of having an excess or deficiency of electrons. An excess of electrons produces a negative polarity, and a deficiency of electrons produces a positive polarity. This determines the direction of the flow of current, as electrons move from a point with an excess of electrons towards a point where there is a deficiency of electrons. Also called electrical polarity (1).
  • The characteristic of having two opposite charges, positive and negative, within the same body or system. A battery, for instance, has two terminals, each with opposite polarity, which are the positive terminal and the negative terminal. Also called electrical polarity (2).
  • In a magnet or magnetic body, the presence and manifestation of two regions where magnetic intensity is at a maximum, each of which is opposite in nature. These regions are labeled north, or positive, pole and south, or negative, pole. Also called magnetic polarity.

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