polarity

noun pl. polarities

1. the tendency of bodies having opposite magnetic poles to arrange themselves so that their two extremities point to the two magnetic poles of the earth
2. any tendency to turn, grow, think, feel, etc. in a certain way or direction, as if because of magnetic attraction or repulsion
3. the fact or condition of being divided into two opposing groups
4. the having or showing of contrary qualities, powers, tendencies, forms, etc.: said as of the roots and stems of a plant or the two electrodes of a battery
5. the condition of being positive or negative with respect to some reference point or object, as electricity