"Frost-free" refers to a feature commonly found in refrigerators and freezers that prevents the buildup of frost inside the appliance. This technology uses a fan to circulate air, maintaining a consistent temperature and reducing humidity, which helps keep food fresh without the need for manual defrosting. In addition to appliances, the term "frost-free" can also apply to certain plants and crops that are resistant to cold temperatures. These plants can survive in climates where frost is common, making them suitable for gardening in various regions, including those with shorter growing seasons.