Definition

1. Noun:
   • A substance added to a liquid to prevent freezing: "Antifreeze" is a liquid chemical compound, typically based on ethylene glycol or propylene glycol, that is mixed with water in engine cooling systems and other applications to lower the freezing point of the mixture. Its primary function is to prevent the liquid from solidifying in cold temperatures, which could cause damage.

Usage Examples

• Noun:
  • I need to add antifreeze to my car's radiator before winter.
  • The mechanic checked the concentration of antifreeze in the cooling system.
  • Pure water is not sufficient; you must use a mixture of water and antifreeze.

Advanced Usage

• "Antifreeze" as a protective agent: Beyond automotive use, antifreeze can refer to substances used in solar water heating systems, HVAC systems, and industrial processes to prevent freezing.
  • The building's heating system uses a special non-toxic antifreeze.

Variants and Related Words

• Coolant (n): A fluid, often containing antifreeze, used to absorb and transfer heat while also preventing freezing in an engine.
  • The coolant was leaking from the hose.

Synonyms

• Freeze depressant: A technical term for a substance that lowers the freezing point of a liquid.
• De-icing fluid: A related substance used to melt or prevent ice formation on surfaces like aircraft wings, though its composition and primary use differ from engine antifreeze.

Noun

1. a liquid added to the water in a cooling system to lower its freezing point