pasteurize means: French milk sterilization by heating to 60-82C, 140-180F to kill harmful bacteria. Louis Pasteur is the one who invented this method. (in Cooking Dictionary)

What else does pasteurize mean?

You can kill bacteria by briefly heating liquids at moderately high temperatures. Louis Pasteur, a French scientist who was investigating the causes of wine and beer spoilage discovered the solution. (in Cooking Dictionary)

Pasteurize (a beverage, or any other food). (in Merlin Dictionary)