1. to heat (a liquid, especially milk) to a specific temperature for a set time to kill harmful bacteria without significantly altering the product's properties
Usage: British spelling; American English uses 'pasteurizes'; third-person singular present tense

Examples

• The dairy pasteurises all its milk to ensure it is safe for consumers.
• Modern facilities pasteurises juice at high temperatures to extend shelf life.
• The process pasteurises the liquid without destroying its nutritional value.
• Many countries require that milk be pasteurised before it reaches store shelves.
• The equipment pasteurises hundreds of gallons of cream each day.