from The American Heritage® Dictionary of the English Language, 4th Edition
- adj. Requiring little or no defrosting: a frost-free refrigerator.
from the GNU version of the Collaborative International Dictionary of English
- adj. not accumulating frost; -- used especially of refrigerators with an automatic defrost cycle such that the freezer compartment remains free of ice without need for a manual defrosting.
Sorry, no etymologies found.