Try to reheat only what you are serving because food will remain more flavorful.
From the ocregister.com
You can make the pie the day of the gathering and reheat it just before serving.
From the dallasnews.com
However, you can reheat them over simmering water in the top of a double boiler.
From the ocregister.com
Reheat, uncovered in a 350-F oven for 30 to 40 minutes, or until top is browned.
From the dallasnews.com
Gift-getters can store soup in the freezer and reheat it later for a quick meal.
From the newsobserver.com
To serve, add the pieces of pork back to the sauce and reheat for a few minutes.
From the independent.co.uk
If you're keeping them, cool on a wire rack, then toast on both sides to reheat.
From the guardian.co.uk
Reheat some vegetables in a skillet and add your beaten eggs and cook until set.
From the huffingtonpost.com
Wait until you reheat before blending the lentils or they will become too solid.
From the nytimes.com
More examples
Heat again; "Please reheat the food from last night"
An afterburner (or reheat) is an additional component added to some jet engines, primarily those on military supersonic aircraft. ...
Reheated is an album by Canned Heat, released in 1988. Just two members of the classic lineup, Fito de la Parra and Larry Taylor, are present on this album. ...
(Reheating) The process of making a cold food hot. Food must be heated food from 45 degrees (7 degrees C) to 165 degrees F(74 degrees C) within two hours.
(Reheating) Heating metal to hot-working temperature. In general no structural changes are intended.
The application of sensible heat to supply air that has been previously cooled below the temperature of the conditioned space by either mechanical refrigeration or the introduction of outdoor air to provide cooling.
A heating coil installed in a computer room air conditioner or air handler to assist in dehumidification of the discharge air stream.
A reheat system cools the air in the air handling unit down to the coldest temperature needed to satisfy the hottest zone served by the system. For the other zones this air temperature is too low for comfort so the airstream is reheated, based upon the needs of each zone. ...