deep-frozen
Word family
Synonym discussion
Sense: adjective/1
The adjective 'deep-frozen' is the most specific of these terms, describing items preserved at a temperature well below the normal freezing point, typically −18°C or lower. 'Frozen' is the general-purpose term for anything that has turned to ice, whether in a home freezer (−18°C) or outside on a cold night (−2°C). 'Flash-frozen' emphasises speed—food is frozen so rapidly that ice crystals stay very small, preserving texture—and is used mainly for commercially prepared fish, fruit, and vegetables. 'Iced' refers to something coated with or surrounded by ice (e.g. 'iced tea with cubes' or 'iced roads'), not frozen solid. 'Chilled' means cooled but not frozen, typically to about 2–5°C. A shop might sell 'deep-frozen peas' (kept at −18°C) but 'fresh-chilled juice' (kept at 4°C). 'Iced coffee' contains ice cubes; 'deep-frozen coffee beans' have been frozen for long-term storage.
Common collocations
Etymology
The term 'deep-freeze' was coined in the 1930s as a brand name for a home freezer that could reach very low temperatures. It combines 'deep' (meaning far down or extreme) with 'freeze' (from Old English 'frēosan', meaning to turn to ice). The hyphenated adjective 'deep-frozen' followed as the past-participle form describing food that had been stored in such a freezer. By the mid-20th century the term had entered general use, and the metaphorical sense—'to put something in the deep-freeze' meaning to suspend activity—emerged in political and business contexts in the 1960s.