(transitive) To enclose (something) in plastic wrapping and make an airtight seal by applying heat to fuse the edges of the wrapping together.

A device that transfers thermal energy between spaces, usually between an enclosed space and the outdoors.

the heat capacity (specific heat) of humid air, expressed per unit mass of dry air in the mixture. The engineering symbol is cₛ.

plural of heat engine

(thermodynamics) An object, system or environment that absorbs and dissipates heat from objects in thermal contact (either direct or radiant) with it.

A device that detects heat and sounds an alarm.

plural of heat detector

plural of heat death

plural of heat capacity

To heat, to cause to become hotter. / (figuratively, by extension, of a situation) To become more exciting or intense.