The term HEATED TO BUBBLING can be summarized as the process of boiling, which is a 6-letter word. Boiling is a method of cooking food by submerging it in boiling water or other liquid until cooked through. Boiling is a fast and efficient way to cook food, as it requires less energy than other methods such as baking or frying. Boiling is also used to sterilize objects and liquids, as well as to extract flavors from ingredients.