1. the process of heating something in advance, especially an oven before cooking

1. present participle of preheat; heating something beforehand

Examples

• The recipe calls for preheating the oven to 350 degrees.
• Preheating takes about ten minutes in most ovens.
• She started preheating the grill before preparing the burgers.
• The preheating process ensures even cooking temperatures.
• Always finish preheating before putting food in the oven.
• The oven light indicates when preheating is complete.