polarize

verb

• 1 [with object] Physics restrict the vibrations of (a transverse wave, especially light) wholly or partially to one direction: (as adjective polarizing)a polarizing microscope

• 2 [with object] Physics cause (something) to acquire polarity:the electrode is polarized in aqueous solution

• 3divide or cause to divide into two sharply contrasting groups or sets of opinions or beliefs: [no object]:the cultural sphere has polarized into two competing ideological positions [with object]:Vietnam polarized political opinion