Helpful wrote:
>Nancy2 wrote:
>>
>> Why not just say, "Heat the oven to 350 deg.F., and put your [food item] in." No need to say, "Pre-heat your
>> oven to 350 deg.F., and put your [food item] in."
>
>Quite right. However, it's not verbose enough for the US market.

Culinarilly "pre-heat" is perfectly correct nomenclature... it means
to fully heat the physical oven, not just the air contained within.