verb (used with object), pas·teur·ized, pas·teur·iz·ing.
British Dictionary definitions for unpasteurized (1 of 2)
British Dictionary definitions for unpasteurized (2 of 2)
Word Origin and History for unpasteurized
1881, with -ize, after Louis Pasteur (1822-1895), French chemist and bacteriologist, who invented the process of heating food, milk, wine, etc., to kill most of the micro-organisms in it; distinguished from sterilization, which involves killing all of them. The surname is literally "Pastor." Related: Pasteurized; pasteurizing.