polarity

英 [pə(ʊ)'lærɪtɪ] 美[pə'lærəti]

• n. [物] 极性；两极；对立

1. a relation between two opposite attributes or tendencies;

"he viewed it as a balanced polarity between good and evil"

2. 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"