to cause (e.g. light waves) to vibrate in a definite or restricted pattern or direction
to give (something) electrical or magnetic polarity
to divide (e.g. people or their opinions) into two opposing factions or categories
to become polarized
polarizable adj
polarization /-ʹzaysh(ə)n/ noun
polarizer noun
[French polariser from Latin polaris polar, from polus: see pole3]