1. the process of dividing into two sharply contrasting groups or opinions with little middle ground
Usage: often used in political and social contexts
2. the restriction of light waves to vibrations in a single plane or direction
Usage: physics and optics term
3. the separation of electric charge in a material or molecule, creating positive and negative poles
Usage: chemistry and physics term

Examples

• The election campaign led to increased polarisation between the two major parties.
• Social media has contributed to the polarisation of public opinion on climate change.
• Polarised sunglasses reduce glare by filtering light waves through polarisation.
• The polarisation of molecules in water allows it to dissolve many ionic compounds.
• Political polarisation makes it difficult for lawmakers to find compromise.
• Scientists study the polarisation of light to understand its wave properties.