Refrigerate (verb)

To keep something at a low temperature in order to preserve it.

Origin:

From refrigerate meaning "to cool or chill something".

Examples:

1. I need to refrigerate this food to keep it fresh.
2. The ice cream needs to be refrigerated before eating.
3. You should refrigerate leftovers within 2 hours of cooking.
4. The groceries need to be refrigerated as soon as possible.
5. You should refrigerate this medication to prolong its effectiveness.