Linguistically and practically, defrost is a versatile English verb meaning to cause something frozen to thaw, or to remove accumulated frost and ice from a surface, vehicle, or mechanical appliance. In culinary settings, it refers to transitioning frozen ingredients into a pliable, thawed state ready for cooking. In appliance maintenance, it describes melting away ice blankets from refrigeration evaporator coils. The process relies entirely on introducing thermal heat energy—either through ambient room air, warm water, heating elements, or microwave radiation—to break the molecular bonds of ice. You can verify this definition by observing solid ice converting back into liquid water or vapor.
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