1. a device that heats a room by warming and circulating air or by radiant heat
2. a device in a car engine that cools the engine by circulating coolant through metal fins
Usage: automotive

Examples

• The old radiator in the bedroom wasn’t working properly.
• She placed a humidifier on top of the radiator.
• The car overheated because the radiator was leaking.
• Steam rose from the hot radiator on the cold morning.
• The mechanic replaced the damaged radiator hose.
• Turn up the radiator if you’re feeling cold.
• The radiator fan kicked on when the engine got too hot.