What Does Pasteursed Mean?

Pasteurization is a process which slows microbial growth in food. The process was named after its creator, French chemist and microbiologist Louis Pasteur. The first pasteurization test was completed by Louis Pasteur and Claude Bernard on April 20, 1864. The process was originally conceived as a way of preventing wine and beer from souring.^[1]
Pasteurization is not intended to kill all pathogenic micro-organisms
in the food or liquid. Instead, pasteurization aims to reduce the
number of viable pathogens so they are unlikely to cause disease
(assuming pasteurization product is stored as indicated and consumed
before its expiration date). Commercial-scale sterilization of food is
not common because it adversely affects the taste and quality of the
product. Certain food products are processed to achieve the state of
commercial sterility.^[2]

To heat liquids to a high temperature.