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countable and uncountable, plural pasteurisations
(British spelling) Heat-treatment of a perishable food to destroy heat-sensitive vegetative cells followed by immediate cooling to limit growth of the surviving cells and germination of spores. quotations examples
Lorries collect the milk from the various outlying farms, whence it is taken to the district distribution centre to undergo pasteurisation.
1959 March, R. C. Rley, “Home with the Milk”, in Trains Illustrated, pages 155, 157