To treat or disinfect (milk or other liquid) using the Harvey process; to apply heat treatment similar to pasteurization.
From Harvey (a person's name or process name) plus the verb-forming suffix -ize meaning 'to make or treat with.' The exact Harvey reference is now somewhat obscure.
This word is nearly extinct, but it represents a whole category of food safety innovations—each one was someone's best shot at keeping milk from going sour or spreading tuberculosis before modern refrigeration.
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