the.com/refrigeration

means The process of keeping things cold enough to slow decay and bacterial growth, buying food and medicine extra days or weeks of usable life.

from From Latin refrigerare — 're-' (intensifying) plus 'frigerare,' to make cold, itself from 'frigus,' cold (the same root that gives us 'frigid'). The Latin word originally just meant cooling something down, no machinery implied — Romans used it for cooling wine or fevers. The mechanical sense, cold as an industrial service rather than a lucky well or cellar, is a 19th-century development, once refrigeration stopped being something you found and became something you built.