1. a substance, typically salt or a chemical compound, used to melt ice and snow on roads, sidewalks, or other surfaces
2. a device or system used to remove ice from aircraft wings, windshields, or other surfaces
Usage: aviation

Examples

• The city spread deicer on the icy roads after the winter storm.
• Rock salt is a common deicer used in northern climates.
• We applied deicer to the windshield to clear the frost.
• The airport uses heated deicer on aircraft before takeoff.
• Calcium chloride is an effective deicer that works at lower temperatures than salt.
• The sidewalk was treated with deicer to prevent slipping hazards.