'Polarity' definitions:

Definition of 'polarity'

From: WordNet
noun
A relation between two opposite attributes or tendencies; "he viewed it as a balanced polarity between good and evil" [syn: mutual opposition, polarity]
noun
Having an indicated pole (as the distinction between positive and negative electric charges); "he got the polarity of the battery reversed"; "charges of opposite sign" [syn: polarity, sign]

Definition of 'Polarity'

From: GCIDE
  • Polarity \Po*lar"i*ty\, n. [Cf. F. polarit['e].]
  • 1. (Physics) That quality or condition of a body in virtue of which it exhibits opposite, or contrasted, properties or powers, in opposite, or contrasted, parts or directions; or a condition giving rise to a contrast of properties corresponding to a contrast of positions, as, for example, attraction and repulsion in the opposite parts of a magnet, the dissimilar phenomena corresponding to the different sides of a polarized ray of light, etc. [1913 Webster]
  • 2. (Geom.) A property of the conic sections by virtue of which a given point determines a corresponding right line and a given right line determines a corresponding point. See Polar, n. [1913 Webster]