Polarity  n. (pl. -ies) 1 tendency of a magnet etc. To point with its extremities to the magnetic poles of the earth, or of a body to lie with its axis in a particular direction. 2 state of having two poles with contrary qualities. 3 state of having two opposite tendencies, opinions, etc. 4 electrical condition of a body (positive or negative). 5 attraction towards an object.