Refers to fluorescent lamps and systems that use a "starter" to warm the lamp electrodes, causing a delay of several seconds before the lamp produces light.

To heat the oven to the specified temperature before adding the foods. Most recipes require preheating of the oven. Usually it will tell you to place in a cool oven if it should not be preheated.

To turn oven on to correct temperature prior to baking.

Application of heat, applied at a determined rate, from ambient temperature to a desired elevated temperature.

To set the temperature and heat the oven well before putting in the food to cook.

to prepare oven to correct temperature prior to baking.

Heating the oven to the temperature needed before using it.

mash food until smooth.

heat beforehand; "Preheat the oven!"

To allow the oven or pan to get to a specified temperature before adding the food to be cooked.

mode of operation of gas discharge lamps where prior to lamp ignition current flows through the filaments, thus heating them. The preheat allows for a reliable lamp ignition and can significantly improve lamp life.

The period of time to which a coating film and substrate are subjected at a lower temperature than that which will produce the final hardening or firing of the film

To set the oven to a desired temperature so it is hot enough to receive food.

Preheat: The heat applied to the substrate immediately before depositing a thermal sprayed coating

Heating of an object prior to coating.

A method of starting fluorescent lamps in which the electrodes are heated before a switch opens to allow a starting voltage to be applied across the lamp. With preheat starting, the lamp flashes on and off for a few seconds before staying lit, because several starting attempts may be necessary to establish the electric arc across the lamp electrodes. Often, the luminaire's start button must be held down until the lamp lights. Preheat ballasts are less energy efficient than rapid-start or instant-start ballasts.

A fluorescent system, which requires starters. With this system several seconds of heating time are necessary between the time the circuit is turned on and the time the lamp produces light.

To turn on the heat in an oven for a period of time before cooking a dish, so that the fingers may be burned when the food is put in, as well as when it is removed.

The heat applied to the base metal or substrate to attain and maintain preheat temperature.

A type of ballast/lamp circuit that uses a separate starter to heat up a fluorescent lamp before high voltage is applied to start the lamp.

To bring an oven or broiler to the correct temperature before cooking food.

To heat oven to desired temperature before putting food in oven. Preheat for 20 minutes when baking for a proper rise.

To bring the oven or grill to the desired temperature before placing the food in to cook.

To heat an oven or broiler in advance of use to assure that it will be the proper temperature when ready to use.

To increase the temperature of an oven to the desired baking temperature prior to the insertion of food.

A class of fluorescents requiring a starter, which allows the lamp and filaments to be properly haeated before allowing the ballast to supply the correct current flow.

A circuit used on fluorescent lamps wherein the electrodes are heated or warmed to a glow stage by an auxiliary switch or starter (can be a glow switch, thermal type, or a mechanical device like a push button) before the lamps are lighted. This system was used on the original fluorescent lamps and is still in use today.

To turn on oven so that desired temperature will be reached before food is inserted for baking.

To heat the oven, grill or toaster to a desired temperature before inserting the food.

To heat oven to desired temperatuer before putting food in.

To set an oven or broiler at the desired temperature 15 to 30 minutes before use so that the temperature is reached before food is put in to cook.

Heating a joint prior to welding, brazing, thermal spraying or soldering to condition the metal, which improves the weld quality.